77563149 has 16 divisors (see below), whose sum is σ = 109132800. Its totient is φ = 48864816.

The previous prime is 77563133. The next prime is 77563159. The reversal of 77563149 is 94136577.

It is not a de Polignac number, because 77563149 - 2⁴ = 77563133 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 77563149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77563159) 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 15 ways as a sum of consecutive naturals, for example, 24922 + ... + 27860.

It is an arithmetic number, because the mean of its divisors is an integer number (6820800).

Almost surely, 2^77563149 is an apocalyptic number.

It is an amenable number.

77563149 is a deficient number, since it is larger than the sum of its proper divisors (31569651).

77563149 is a wasteful number, since it uses less digits than its factorization.

77563149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3424.

The product of its digits is 158760, while the sum is 42.

The square root of 77563149 is about 8806.9943226960. The cubic root of 77563149 is about 426.4667183112.

The spelling of 77563149 in words is "seventy-seven million, five hundred sixty-three thousand, one hundred forty-nine".