74666667640 has 32 divisors (see below), whose sum is σ = 177882356880. Its totient is φ = 28109804032.

The previous prime is 74666667631. The next prime is 74666667679. The reversal of 74666667640 is 4676666647.

It is a super-2 number, since 2×74666667640² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54901282 + ... + 54902641.

Almost surely, 2^74666667640 is an apocalyptic number.

It is an amenable number.

74666667640 is an abundant number, since it is smaller than the sum of its proper divisors (103215689240).

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

74666667640 is a wasteful number, since it uses less digits than its factorization.

74666667640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109803951 (or 109803947 counting only the distinct ones).

The product of its (nonzero) digits is 36578304, while the sum is 58.

The spelling of 74666667640 in words is "seventy-four billion, six hundred sixty-six million, six hundred sixty-seven thousand, six hundred forty".