672949632 has 64 divisors (see below), whose sum is σ = 1801728000. Its totient is φ = 222534144.

The previous prime is 672949609. The next prime is 672949633. The reversal of 672949632 is 236949276.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×672949632² = 905722414417870848, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672949633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41869 + ... + 55667.

It is an arithmetic number, because the mean of its divisors is an integer number (28152000).

Almost surely, 2^672949632 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 672949632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (900864000).

672949632 is an abundant number, since it is smaller than the sum of its proper divisors (1128778368).

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

672949632 is a wasteful number, since it uses less digits than its factorization.

672949632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13943 (or 13931 counting only the distinct ones).

The product of its digits is 979776, while the sum is 48.

The square root of 672949632 is about 25941.2727521222. The cubic root of 672949632 is about 876.3162261920.

The spelling of 672949632 in words is "six hundred seventy-two million, nine hundred forty-nine thousand, six hundred thirty-two".