77669245 has 24 divisors (see below), whose sum is σ = 100124640. Its totient is φ = 57676320.

The previous prime is 77669233. The next prime is 77669257. The reversal of 77669245 is 54296677.

It is an interprime number because it is at equal distance from previous prime (77669233) and next prime (77669257).

It is not a de Polignac number, because 77669245 - 2⁵ = 77669213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 77669195 and 77669204.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 592830 + ... + 592960.

It is an arithmetic number, because the mean of its divisors is an integer number (4171860).

Almost surely, 2^77669245 is an apocalyptic number.

It is an amenable number.

77669245 is a deficient number, since it is larger than the sum of its proper divisors (22455395).

77669245 is a wasteful number, since it uses less digits than its factorization.

77669245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313 (or 234 counting only the distinct ones).

The product of its digits is 635040, while the sum is 46.

The square root of 77669245 is about 8813.0156586721. The cubic root of 77669245 is about 426.6610795031.

The spelling of 77669245 in words is "seventy-seven million, six hundred sixty-nine thousand, two hundred forty-five".