72670651 has 2 divisors, whose sum is σ = 72670652. Its totient is φ = 72670650.

The previous prime is 72670613. The next prime is 72670667. The reversal of 72670651 is 15607627.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72670651 - 2⁷ = 72670523 is a prime.

It is not a weakly prime, because it can be changed into another prime (72670681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36335325 + 36335326.

It is an arithmetic number, because the mean of its divisors is an integer number (36335326).

Almost surely, 2^72670651 is an apocalyptic number.

72670651 is a deficient number, since it is larger than the sum of its proper divisors (1).

72670651 is an equidigital number, since it uses as much as digits as its factorization.

72670651 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 72670651 is about 8524.7082648030. The cubic root of 72670651 is about 417.3044509546.

The spelling of 72670651 in words is "seventy-two million, six hundred seventy thousand, six hundred fifty-one".