72670511 has 2 divisors, whose sum is σ = 72670512. Its totient is φ = 72670510.

The previous prime is 72670487. The next prime is 72670519. The reversal of 72670511 is 11507627.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72670511 - 2⁶ = 72670447 is a prime.

It is a super-2 number, since 2×72670511² = 10562006338002242, which contains 22 as substring.

It is a Chen prime.

It is equal to p_4265813 and since 72670511 and 4265813 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72670519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36335255 + 36335256.

It is an arithmetic number, because the mean of its divisors is an integer number (36335256).

Almost surely, 2^72670511 is an apocalyptic number.

72670511 is a deficient number, since it is larger than the sum of its proper divisors (1).

72670511 is an equidigital number, since it uses as much as digits as its factorization.

72670511 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2940, while the sum is 29.

The square root of 72670511 is about 8524.7000533743. The cubic root of 72670511 is about 417.3041829754.

The spelling of 72670511 in words is "seventy-two million, six hundred seventy thousand, five hundred eleven".