74672221668 has 24 divisors (see below), whose sum is σ = 190074746400. Its totient is φ = 22627945920.

The previous prime is 74672221667. The next prime is 74672221669. The reversal of 74672221668 is 86612227647.

It is an interprime number because it is at equal distance from previous prime (74672221667) and next prime (74672221669).

It is a self number, because there is not a number n which added to its sum of digits gives 74672221668.

It is not an unprimeable number, because it can be changed into a prime (74672221667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 282849193 + ... + 282849456.

It is an arithmetic number, because the mean of its divisors is an integer number (7919781100).

Almost surely, 2^74672221668 is an apocalyptic number.

It is an amenable number.

74672221668 is an abundant number, since it is smaller than the sum of its proper divisors (115402524732).

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

74672221668 is a wasteful number, since it uses less digits than its factorization.

74672221668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565698667 (or 565698665 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 51.

The spelling of 74672221668 in words is "seventy-four billion, six hundred seventy-two million, two hundred twenty-one thousand, six hundred sixty-eight".