72670577 has 6 divisors (see below), whose sum is σ = 84535218. Its totient is φ = 62289024.

The previous prime is 72670561. The next prime is 72670583. The reversal of 72670577 is 77507627.

It can be written as a sum of positive squares in only one way, i.e., 65141041 + 7529536 = 8071^2 + 2744^2 .

It is not a de Polignac number, because 72670577 - 2⁴ = 72670561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72670177) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 741488 + ... + 741585.

It is an arithmetic number, because the mean of its divisors is an integer number (14089203).

Almost surely, 2^72670577 is an apocalyptic number.

It is an amenable number.

72670577 is a deficient number, since it is larger than the sum of its proper divisors (11864641).

72670577 is a wasteful number, since it uses less digits than its factorization.

72670577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1483087 (or 1483080 counting only the distinct ones).

The product of its (nonzero) digits is 144060, while the sum is 41.

The square root of 72670577 is about 8524.7039244774. The cubic root of 72670577 is about 417.3043093085.

The spelling of 72670577 in words is "seventy-two million, six hundred seventy thousand, five hundred seventy-seven".