72758861 has 8 divisors (see below), whose sum is σ = 88044480. Its totient is φ = 58696128.

The previous prime is 72758849. The next prime is 72758911. The reversal of 72758861 is 16885727.

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

It is a cyclic number.

It is not a de Polignac number, because 72758861 - 2⁶ = 72758797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72758801) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 305591 + ... + 305828.

It is an arithmetic number, because the mean of its divisors is an integer number (11005560).

Almost surely, 2^72758861 is an apocalyptic number.

It is an amenable number.

72758861 is a deficient number, since it is larger than the sum of its proper divisors (15285619).

72758861 is a wasteful number, since it uses less digits than its factorization.

72758861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611443.

The product of its digits is 188160, while the sum is 44.

The square root of 72758861 is about 8529.8804798192. The cubic root of 72758861 is about 417.4732285892.

The spelling of 72758861 in words is "seventy-two million, seven hundred fifty-eight thousand, eight hundred sixty-one".