67990572 has 72 divisors (see below), whose sum is σ = 186666480. Its totient is φ = 20741760.

The previous prime is 67990567. The next prime is 67990579. The reversal of 67990572 is 27509976.

67990572 is a `hidden beast` number, since 6 + 79 + 9 + 0 + 572 = 666.

It is not an unprimeable number, because it can be changed into a prime (67990579) 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, 60754 + ... + 61862.

It is an arithmetic number, because the mean of its divisors is an integer number (2592590).

Almost surely, 2^67990572 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 67990572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93333240).

67990572 is an abundant number, since it is smaller than the sum of its proper divisors (118675908).

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

67990572 is a wasteful number, since it uses less digits than its factorization.

67990572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1263 (or 1258 counting only the distinct ones).

The product of its (nonzero) digits is 238140, while the sum is 45.

The square root of 67990572 is about 8245.6395749511. The cubic root of 67990572 is about 408.1466456707.

The spelling of 67990572 in words is "sixty-seven million, nine hundred ninety thousand, five hundred seventy-two".