79774690 has 16 divisors (see below), whose sum is σ = 143700480. Its totient is φ = 31886320.

The previous prime is 79774661. The next prime is 79774691. The reversal of 79774690 is 9647797.

It is a super-2 number, since 2×79774690² = 12728002329192200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (79774691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19221 + ... + 22999.

It is an arithmetic number, because the mean of its divisors is an integer number (8981280).

Almost surely, 2^79774690 is an apocalyptic number.

79774690 is a deficient number, since it is larger than the sum of its proper divisors (63925790).

79774690 is a wasteful number, since it uses less digits than its factorization.

79774690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5897.

The product of its (nonzero) digits is 666792, while the sum is 49.

The square root of 79774690 is about 8931.6678173788. The cubic root of 79774690 is about 430.4820445909.

The spelling of 79774690 in words is "seventy-nine million, seven hundred seventy-four thousand, six hundred ninety".