72764827 has 4 divisors (see below), whose sum is σ = 73109896. Its totient is φ = 72419760.

The previous prime is 72764821. The next prime is 72764837. The reversal of 72764827 is 72846727.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72846727 = 23 ⋅3167249.

It is a cyclic number.

It is not a de Polignac number, because 72764827 - 2³ = 72764819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72764821) 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, 172218 + ... + 172639.

It is an arithmetic number, because the mean of its divisors is an integer number (18277474).

Almost surely, 2^72764827 is an apocalyptic number.

72764827 is a deficient number, since it is larger than the sum of its proper divisors (345069).

72764827 is a wasteful number, since it uses less digits than its factorization.

72764827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345068.

The product of its digits is 263424, while the sum is 43.

The square root of 72764827 is about 8530.2301844675. The cubic root of 72764827 is about 417.4846387789.

The spelling of 72764827 in words is "seventy-two million, seven hundred sixty-four thousand, eight hundred twenty-seven".