72464757 has 4 divisors (see below), whose sum is σ = 96619680. Its totient is φ = 48309836.

The previous prime is 72464729. The next prime is 72464771. The reversal of 72464757 is 75746427.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 72464757 - 2⁷ = 72464629 is a prime.

It is a super-2 number, since 2×72464757² = 10502282014138098, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72464797) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12077457 + ... + 12077462.

It is an arithmetic number, because the mean of its divisors is an integer number (24154920).

Almost surely, 2^72464757 is an apocalyptic number.

It is an amenable number.

72464757 is a deficient number, since it is larger than the sum of its proper divisors (24154923).

72464757 is a wasteful number, since it uses less digits than its factorization.

72464757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24154922.

The product of its digits is 329280, while the sum is 42.

The square root of 72464757 is about 8512.6233911762. The cubic root of 72464757 is about 416.9099691195.

The spelling of 72464757 in words is "seventy-two million, four hundred sixty-four thousand, seven hundred fifty-seven".