72670858 has 16 divisors (see below), whose sum is σ = 123570720. Its totient is φ = 31774896.

The previous prime is 72670853. The next prime is 72670919. The reversal of 72670858 is 85807627.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (72670853) 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, 73060 + ... + 74047.

It is an arithmetic number, because the mean of its divisors is an integer number (7723170).

Almost surely, 2^72670858 is an apocalyptic number.

72670858 is a deficient number, since it is larger than the sum of its proper divisors (50899862).

72670858 is a wasteful number, since it uses less digits than its factorization.

72670858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147141.

The product of its (nonzero) digits is 188160, while the sum is 43.

The square root of 72670858 is about 8524.7204059723. The cubic root of 72670858 is about 417.3048471803.

The spelling of 72670858 in words is "seventy-two million, six hundred seventy thousand, eight hundred fifty-eight".