77630399 has 8 divisors (see below), whose sum is σ = 96786048. Its totient is φ = 60491160.

The previous prime is 77630393. The next prime is 77630431. The reversal of 77630399 is 99303677.

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 77630399 - 2¹² = 77626303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77630393) 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, 504017 + ... + 504170.

It is an arithmetic number, because the mean of its divisors is an integer number (12098256).

Almost surely, 2^77630399 is an apocalyptic number.

77630399 is a deficient number, since it is larger than the sum of its proper divisors (19155649).

77630399 is a wasteful number, since it uses less digits than its factorization.

77630399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1008205.

The product of its (nonzero) digits is 214326, while the sum is 44.

The square root of 77630399 is about 8810.8114836262. The cubic root of 77630399 is about 426.5899366279.

The spelling of 77630399 in words is "seventy-seven million, six hundred thirty thousand, three hundred ninety-nine".