74840574687 has 32 divisors (see below), whose sum is σ = 101844719616. Its totient is φ = 48872419200.

The previous prime is 74840574649. The next prime is 74840574719. The reversal of 74840574687 is 78647504847.

It is not a de Polignac number, because 74840574687 - 2¹⁸ = 74840312543 is a prime.

It is a super-2 number, since 2×74840574687² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 74840574687.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74840574187) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75519762 + ... + 75520752.

It is an arithmetic number, because the mean of its divisors is an integer number (3182647488).

Almost surely, 2^74840574687 is an apocalyptic number.

74840574687 is a deficient number, since it is larger than the sum of its proper divisors (27004144929).

74840574687 is a wasteful number, since it uses less digits than its factorization.

74840574687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2351.

The product of its (nonzero) digits is 42147840, while the sum is 60.

The spelling of 74840574687 in words is "seventy-four billion, eight hundred forty million, five hundred seventy-four thousand, six hundred eighty-seven".