672074532 has 72 divisors (see below), whose sum is σ = 1806209496. Its totient is φ = 209977344.

The previous prime is 672074527. The next prime is 672074537. The reversal of 672074532 is 235470276.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (672074527) and next prime (672074537).

It can be written as a sum of positive squares in 4 ways, for example, as 313502436 + 358572096 = 17706^2 + 18936^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (672074537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 155148 + ... + 159420.

It is an arithmetic number, because the mean of its divisors is an integer number (25086243).

Almost surely, 2^672074532 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 672074532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (903104748).

672074532 is an abundant number, since it is smaller than the sum of its proper divisors (1134134964).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

672074532 is a wasteful number, since it uses less digits than its factorization.

672074532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4557 (or 4552 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 36.

The square root of 672074532 is about 25924.4003209332. The cubic root of 672074532 is about 875.9362091535.

The spelling of 672074532 in words is "six hundred seventy-two million, seventy-four thousand, five hundred thirty-two".