72874765 has 8 divisors (see below), whose sum is σ = 87504120. Its totient is φ = 58263552.

The previous prime is 72874757. The next prime is 72874771. The reversal of 72874765 is 56747827.

It can be written as a sum of positive squares in 4 ways, for example, as 9847044 + 63027721 = 3138^2 + 7939^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72874765 - 2³ = 72874757 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6957 + ... + 13933.

It is an arithmetic number, because the mean of its divisors is an integer number (10938015).

Almost surely, 2^72874765 is an apocalyptic number.

It is an amenable number.

72874765 is a deficient number, since it is larger than the sum of its proper divisors (14629355).

72874765 is a wasteful number, since it uses less digits than its factorization.

72874765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9071.

The product of its digits is 658560, while the sum is 46.

The square root of 72874765 is about 8536.6717753466. The cubic root of 72874765 is about 417.6947876128.

The spelling of 72874765 in words is "seventy-two million, eight hundred seventy-four thousand, seven hundred sixty-five".