72677771 has 8 divisors (see below), whose sum is σ = 77220864. Its totient is φ = 68164480.

The previous prime is 72677743. The next prime is 72677791. The reversal of 72677771 is 17777627.

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 72677771 - 2¹⁸ = 72415627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72677711) 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, 2315 + ... + 12276.

It is an arithmetic number, because the mean of its divisors is an integer number (9652608).

Almost surely, 2^72677771 is an apocalyptic number.

72677771 is a deficient number, since it is larger than the sum of its proper divisors (4543093).

72677771 is a wasteful number, since it uses less digits than its factorization.

72677771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14901.

The product of its digits is 201684, while the sum is 44.

The square root of 72677771 is about 8525.1258641735. The cubic root of 72677771 is about 417.3180791553.

The spelling of 72677771 in words is "seventy-two million, six hundred seventy-seven thousand, seven hundred seventy-one".