72476977 has 4 divisors (see below), whose sum is σ = 74814976. Its totient is φ = 70138980.

The previous prime is 72476959. The next prime is 72476993. The reversal of 72476977 is 77967427.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 72476977 - 2¹¹ = 72474929 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72476977.

It is not an unprimeable number, because it can be changed into a prime (72476947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1168953 + ... + 1169014.

It is an arithmetic number, because the mean of its divisors is an integer number (18703744).

Almost surely, 2^72476977 is an apocalyptic number.

It is an amenable number.

72476977 is a deficient number, since it is larger than the sum of its proper divisors (2337999).

72476977 is a wasteful number, since it uses less digits than its factorization.

72476977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2337998.

The product of its digits is 1037232, while the sum is 49.

The square root of 72476977 is about 8513.3411185034. The cubic root of 72476977 is about 416.9334028257.

The spelling of 72476977 in words is "seventy-two million, four hundred seventy-six thousand, nine hundred seventy-seven".