74799915 has 32 divisors (see below), whose sum is σ = 127448640. Its totient is φ = 37330944.

The previous prime is 74799911. The next prime is 74799917. The reversal of 74799915 is 51999747.

It is a happy number.

It is not a de Polignac number, because 74799915 - 2² = 74799911 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (74799911) 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, 49491 + ... + 50979.

It is an arithmetic number, because the mean of its divisors is an integer number (3982770).

Almost surely, 2^74799915 is an apocalyptic number.

74799915 is a deficient number, since it is larger than the sum of its proper divisors (52648725).

74799915 is a wasteful number, since it uses less digits than its factorization.

74799915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1711.

The product of its digits is 714420, while the sum is 51.

The square root of 74799915 is about 8648.6944101408. The cubic root of 74799915 is about 421.3409803871.

The spelling of 74799915 in words is "seventy-four million, seven hundred ninety-nine thousand, nine hundred fifteen".