72659477 has 16 divisors (see below), whose sum is σ = 83904000. Its totient is φ = 62227440.

The previous prime is 72659473. The next prime is 72659497. The reversal of 72659477 is 77495627.

It is not a de Polignac number, because 72659477 - 2² = 72659473 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72659473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40718 + ... + 42464.

It is an arithmetic number, because the mean of its divisors is an integer number (5244000).

Almost surely, 2^72659477 is an apocalyptic number.

It is an amenable number.

72659477 is a deficient number, since it is larger than the sum of its proper divisors (11244523).

72659477 is a wasteful number, since it uses less digits than its factorization.

72659477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1976.

The product of its digits is 740880, while the sum is 47.

The square root of 72659477 is about 8524.0528506104. The cubic root of 72659477 is about 417.2830613065.

The spelling of 72659477 in words is "seventy-two million, six hundred fifty-nine thousand, four hundred seventy-seven".