72705598 has 8 divisors (see below), whose sum is σ = 124638192. Its totient is φ = 31159536.

The previous prime is 72705551. The next prime is 72705631. The reversal of 72705598 is 89550727.

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

It is a super-2 number, since 2×72705598² = 10572207961075208, which contains 22 as substring.

It is a congruent number.

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, 2596615 + ... + 2596642.

It is an arithmetic number, because the mean of its divisors is an integer number (15579774).

Almost surely, 2^72705598 is an apocalyptic number.

72705598 is a deficient number, since it is larger than the sum of its proper divisors (51932594).

72705598 is a wasteful number, since it uses less digits than its factorization.

72705598 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5193266.

The product of its (nonzero) digits is 176400, while the sum is 43.

The square root of 72705598 is about 8526.7577659976. The cubic root of 72705598 is about 417.3713335330.

The spelling of 72705598 in words is "seventy-two million, seven hundred five thousand, five hundred ninety-eight".