72477297 has 24 divisors (see below), whose sum is σ = 107310528. Its totient is φ = 47124000.

The previous prime is 72477283. The next prime is 72477331. The reversal of 72477297 is 79277427.

It is a happy number.

It is not a de Polignac number, because 72477297 - 2⁴ = 72477281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72477497) 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 23 ways as a sum of consecutive naturals, for example, 63978 + ... + 65100.

It is an arithmetic number, because the mean of its divisors is an integer number (4471272).

Almost surely, 2^72477297 is an apocalyptic number.

It is an amenable number.

72477297 is a deficient number, since it is larger than the sum of its proper divisors (34833231).

72477297 is a wasteful number, since it uses less digits than its factorization.

72477297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1301 (or 1298 counting only the distinct ones).

The product of its digits is 345744, while the sum is 45.

The square root of 72477297 is about 8513.3599125140. The cubic root of 72477297 is about 416.9340164389.

The spelling of 72477297 in words is "seventy-two million, four hundred seventy-seven thousand, two hundred ninety-seven".