77333649 has 8 divisors (see below), whose sum is σ = 103152192. Its totient is φ = 51535440.

The previous prime is 77333639. The next prime is 77333657. The reversal of 77333649 is 94633377.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 77333649 - 2¹⁷ = 77202577 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 77333649.

It is not an unprimeable number, because it can be changed into a prime (77333609) 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, 11932 + ... + 17234.

It is an arithmetic number, because the mean of its divisors is an integer number (12894024).

Almost surely, 2^77333649 is an apocalyptic number.

It is an amenable number.

77333649 is a deficient number, since it is larger than the sum of its proper divisors (25818543).

77333649 is a wasteful number, since it uses less digits than its factorization.

77333649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10167.

The product of its digits is 285768, while the sum is 42.

The square root of 77333649 is about 8793.9552534681. The cubic root of 77333649 is about 426.0456815832.

The spelling of 77333649 in words is "seventy-seven million, three hundred thirty-three thousand, six hundred forty-nine".