74940689600 has 168 divisors, whose sum is σ = 217543123968. Its totient is φ = 24864998400.

The previous prime is 74940689513. The next prime is 74940689609. The reversal of 74940689600 is 698604947.

It is a happy number.

It is a super-2 number, since 2×74940689600² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (74940689609) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 239279 + ... + 455121.

Almost surely, 2^74940689600 is an apocalyptic number.

74940689600 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74940689600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108771561984).

74940689600 is an abundant number, since it is smaller than the sum of its proper divisors (142602434368).

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

74940689600 is a wasteful number, since it uses less digits than its factorization.

74940689600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215903 (or 215888 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 53.

The spelling of 74940689600 in words is "seventy-four billion, nine hundred forty million, six hundred eighty-nine thousand, six hundred".