72817466 has 8 divisors (see below), whose sum is σ = 109466580. Its totient is φ = 36328608.

The previous prime is 72817457. The next prime is 72817489. The reversal of 72817466 is 66471827.

It can be written as a sum of positive squares in 2 ways, for example, as 69472225 + 3345241 = 8335^2 + 1829^2 .

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

It is a super-2 number, since 2×72817466² = 10604766709322312, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38921 + ... + 40748.

Almost surely, 2^72817466 is an apocalyptic number.

72817466 is a deficient number, since it is larger than the sum of its proper divisors (36649114).

72817466 is a wasteful number, since it uses less digits than its factorization.

72817466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80128.

The product of its digits is 112896, while the sum is 41.

The square root of 72817466 is about 8533.3150650846. The cubic root of 72817466 is about 417.5852857430.

The spelling of 72817466 in words is "seventy-two million, eight hundred seventeen thousand, four hundred sixty-six".