77530863 has 8 divisors (see below), whose sum is σ = 109455408. Its totient is φ = 48646784.

The previous prime is 77530853. The next prime is 77530879. The reversal of 77530863 is 36803577.

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 77530863 - 2⁴ = 77530847 is a prime.

It is a super-3 number, since 3×77530863³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77530813) 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, 760056 + ... + 760157.

It is an arithmetic number, because the mean of its divisors is an integer number (13681926).

Almost surely, 2^77530863 is an apocalyptic number.

77530863 is a deficient number, since it is larger than the sum of its proper divisors (31924545).

77530863 is a wasteful number, since it uses less digits than its factorization.

77530863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1520233.

The product of its (nonzero) digits is 105840, while the sum is 39.

The square root of 77530863 is about 8805.1611569579. The cubic root of 77530863 is about 426.4075372201.

The spelling of 77530863 in words is "seventy-seven million, five hundred thirty thousand, eight hundred sixty-three".