72999901 has 8 divisors (see below), whose sum is σ = 78702624. Its totient is φ = 67309680.

The previous prime is 72999877. The next prime is 72999923. The reversal of 72999901 is 10999927.

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 72999901 - 2⁵ = 72999869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72999961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11610 + ... + 16756.

It is an arithmetic number, because the mean of its divisors is an integer number (9837828).

Almost surely, 2^72999901 is an apocalyptic number.

It is an amenable number.

72999901 is a deficient number, since it is larger than the sum of its proper divisors (5702723).

72999901 is a wasteful number, since it uses less digits than its factorization.

72999901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6251.

The product of its (nonzero) digits is 91854, while the sum is 46.

The square root of 72999901 is about 8543.9979517788. The cubic root of 72999901 is about 417.9337307090.

The spelling of 72999901 in words is "seventy-two million, nine hundred ninety-nine thousand, nine hundred one".