74689632 has 36 divisors (see below), whose sum is σ = 212399460. Its totient is φ = 24896448.

The previous prime is 74689609. The next prime is 74689639. The reversal of 74689632 is 23698647.

74689632 is a `hidden beast` number, since 7 + 4 + 6 + 8 + 9 + 632 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×74689632² = 11157082256590848, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74689639) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 129382 + ... + 129957.

It is an arithmetic number, because the mean of its divisors is an integer number (5899985).

Almost surely, 2^74689632 is an apocalyptic number.

74689632 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

74689632 is an abundant number, since it is smaller than the sum of its proper divisors (137709828).

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

74689632 is a wasteful number, since it uses less digits than its factorization.

74689632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259355 (or 259344 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 74689632 is about 8642.3163561629. The cubic root of 74689632 is about 421.1338072349.

The spelling of 74689632 in words is "seventy-four million, six hundred eighty-nine thousand, six hundred thirty-two".