74648817684 has 72 divisors (see below), whose sum is σ = 215703528768. Its totient is φ = 21323151360.

The previous prime is 74648817637. The next prime is 74648817689. The reversal of 74648817684 is 48671884647.

74648817684 is a `hidden beast` number, since 7 + 4 + 6 + 488 + 1 + 76 + 84 = 666.

It is a super-2 number, since 2×74648817684² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74648817689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1096159 + ... + 1162265.

It is an arithmetic number, because the mean of its divisors is an integer number (2995882344).

Almost surely, 2^74648817684 is an apocalyptic number.

It is an amenable number.

74648817684 is an abundant number, since it is smaller than the sum of its proper divisors (141054711084).

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

74648817684 is a wasteful number, since it uses less digits than its factorization.

74648817684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70605 (or 70600 counting only the distinct ones).

The product of its digits is 57802752, while the sum is 63.

The spelling of 74648817684 in words is "seventy-four billion, six hundred forty-eight million, eight hundred seventeen thousand, six hundred eighty-four".