72404777 has 8 divisors (see below), whose sum is σ = 73871616. Its totient is φ = 70952832.

The previous prime is 72404767. The next prime is 72404797. The reversal of 72404777 is 77740427.

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 72404777 - 2¹⁰ = 72403753 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 72404777.

It is not an unprimeable number, because it can be changed into a prime (72404737) 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, 6368 + ... + 13614.

It is an arithmetic number, because the mean of its divisors is an integer number (9233952).

Almost surely, 2^72404777 is an apocalyptic number.

It is an amenable number.

72404777 is a deficient number, since it is larger than the sum of its proper divisors (1466839).

72404777 is a wasteful number, since it uses less digits than its factorization.

72404777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7447.

The product of its (nonzero) digits is 76832, while the sum is 38.

The square root of 72404777 is about 8509.0996586008. The cubic root of 72404777 is about 416.7949101424.

The spelling of 72404777 in words is "seventy-two million, four hundred four thousand, seven hundred seventy-seven".