77244634 has 8 divisors (see below), whose sum is σ = 122682708. Its totient is φ = 36350400.

The previous prime is 77244631. The next prime is 77244647. The reversal of 77244634 is 43644277.

It can be written as a sum of positive squares in 2 ways, for example, as 69139225 + 8105409 = 8315^2 + 2847^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 77244593 and 77244602.

It is not an unprimeable number, because it can be changed into a prime (77244631) 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 3 ways as a sum of consecutive naturals, for example, 1135917 + ... + 1135984.

Almost surely, 2^77244634 is an apocalyptic number.

77244634 is a deficient number, since it is larger than the sum of its proper divisors (45438074).

77244634 is a wasteful number, since it uses less digits than its factorization.

77244634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2271920.

The product of its digits is 112896, while the sum is 37.

The square root of 77244634 is about 8788.8926492477. The cubic root of 77244634 is about 425.8821520065.

The spelling of 77244634 in words is "seventy-seven million, two hundred forty-four thousand, six hundred thirty-four".