80656674 has 16 divisors (see below), whose sum is σ = 184358208. Its totient is φ = 23044752.

The previous prime is 80656669. The next prime is 80656679. The reversal of 80656674 is 47665608.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (80656669) and next prime (80656679).

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 1920397 = 80656674 / (8 + 0 + 6 + 5 + 6 + 6 + 7 + 4).

It is not an unprimeable number, because it can be changed into a prime (80656679) 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 7 ways as a sum of consecutive naturals, for example, 960157 + ... + 960240.

It is an arithmetic number, because the mean of its divisors is an integer number (11522388).

Almost surely, 2^80656674 is an apocalyptic number.

80656674 is an abundant number, since it is smaller than the sum of its proper divisors (103701534).

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

80656674 is a wasteful number, since it uses less digits than its factorization.

80656674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1920409.

The product of its (nonzero) digits is 241920, while the sum is 42.

The square root of 80656674 is about 8980.9060790101. The cubic root of 80656674 is about 432.0626945189.

The spelling of 80656674 in words is "eighty million, six hundred fifty-six thousand, six hundred seventy-four".