72772466 has 8 divisors (see below), whose sum is σ = 117555564. Its totient is φ = 33587280.

The previous prime is 72772463. The next prime is 72772471. The reversal of 72772466 is 66427727.

It can be written as a sum of positive squares in 2 ways, for example, as 64240225 + 8532241 = 8015^2 + 2921^2 .

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (72772463) 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, 1399445 + ... + 1399496.

Almost surely, 2^72772466 is an apocalyptic number.

72772466 is a deficient number, since it is larger than the sum of its proper divisors (44783098).

72772466 is a wasteful number, since it uses less digits than its factorization.

72772466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2798956.

The product of its digits is 197568, while the sum is 41.

The square root of 72772466 is about 8530.6779332009. The cubic root of 72772466 is about 417.4992477307.

The spelling of 72772466 in words is "seventy-two million, seven hundred seventy-two thousand, four hundred sixty-six".