74975715 has 12 divisors (see below), whose sum is σ = 129957984. Its totient is φ = 39987024.

The previous prime is 74975689. The next prime is 74975717. The reversal of 74975715 is 51757947.

74975715 is a `hidden beast` number, since 74 + 9 + 7 + 571 + 5 = 666.

It is not a de Polignac number, because 74975715 - 2⁵ = 74975683 is a prime.

It is a super-2 number, since 2×74975715² = 11242715679522450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 1666127 = 74975715 / (7 + 4 + 9 + 7 + 5 + 7 + 1 + 5).

It is not an unprimeable number, because it can be changed into a prime (74975717) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 833019 + ... + 833108.

It is an arithmetic number, because the mean of its divisors is an integer number (10829832).

Almost surely, 2^74975715 is an apocalyptic number.

74975715 is a deficient number, since it is larger than the sum of its proper divisors (54982269).

74975715 is a wasteful number, since it uses less digits than its factorization.

74975715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1666138 (or 1666135 counting only the distinct ones).

The product of its digits is 308700, while the sum is 45.

The square root of 74975715 is about 8658.8518291977. The cubic root of 74975715 is about 421.6708104877.

The spelling of 74975715 in words is "seventy-four million, nine hundred seventy-five thousand, seven hundred fifteen".