72466257 has 16 divisors (see below), whose sum is σ = 102529152. Its totient is φ = 45369600.

The previous prime is 72466249. The next prime is 72466267. The reversal of 72466257 is 75266427.

It is a happy number.

It is not a de Polignac number, because 72466257 - 2³ = 72466249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72466217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27132 + ... + 29682.

It is an arithmetic number, because the mean of its divisors is an integer number (6408072).

Almost surely, 2^72466257 is an apocalyptic number.

It is an amenable number.

72466257 is a deficient number, since it is larger than the sum of its proper divisors (30062895).

72466257 is a wasteful number, since it uses less digits than its factorization.

72466257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3128.

The product of its digits is 141120, while the sum is 39.

The square root of 72466257 is about 8512.7114951700. The cubic root of 72466257 is about 416.9128457392.

The spelling of 72466257 in words is "seventy-two million, four hundred sixty-six thousand, two hundred fifty-seven".