72765701 has 4 divisors (see below), whose sum is σ = 73070400. Its totient is φ = 72461004.

The previous prime is 72765697. The next prime is 72765713. The reversal of 72765701 is 10756727.

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, and also an emirpimes, since its reverse is a distinct semiprime: 10756727 = 1637 ⋅6571.

It is a cyclic number.

It is not a de Polignac number, because 72765701 - 2² = 72765697 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72765751) 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, 151991 + ... + 152468.

It is an arithmetic number, because the mean of its divisors is an integer number (18267600).

Almost surely, 2^72765701 is an apocalyptic number.

It is an amenable number.

72765701 is a deficient number, since it is larger than the sum of its proper divisors (304699).

72765701 is a wasteful number, since it uses less digits than its factorization.

72765701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304698.

The product of its (nonzero) digits is 20580, while the sum is 35.

The square root of 72765701 is about 8530.2814138808. The cubic root of 72765701 is about 417.4863102830.

The spelling of 72765701 in words is "seventy-two million, seven hundred sixty-five thousand, seven hundred one".