72766558 has 8 divisors (see below), whose sum is σ = 109448352. Its totient is φ = 36283776.

The previous prime is 72766537. The next prime is 72766571. The reversal of 72766558 is 85566727.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48835 + ... + 50302.

It is an arithmetic number, because the mean of its divisors is an integer number (13681044).

Almost surely, 2^72766558 is an apocalyptic number.

72766558 is a deficient number, since it is larger than the sum of its proper divisors (36681794).

72766558 is a wasteful number, since it uses less digits than its factorization.

72766558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99506.

The product of its digits is 705600, while the sum is 46.

The square root of 72766558 is about 8530.3316465422. The cubic root of 72766558 is about 417.4879492619.

The spelling of 72766558 in words is "seventy-two million, seven hundred sixty-six thousand, five hundred fifty-eight".