77576149 has 4 divisors (see below), whose sum is σ = 88658464. Its totient is φ = 66493836.

The previous prime is 77576143. The next prime is 77576173. The reversal of 77576149 is 94167577.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 77576149 - 2⁹ = 77575637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77576099 and 77576108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77576143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5541147 + ... + 5541160.

It is an arithmetic number, because the mean of its divisors is an integer number (22164616).

Almost surely, 2^77576149 is an apocalyptic number.

It is an amenable number.

77576149 is a deficient number, since it is larger than the sum of its proper divisors (11082315).

77576149 is a wasteful number, since it uses less digits than its factorization.

77576149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11082314.

The product of its digits is 370440, while the sum is 46.

The square root of 77576149 is about 8807.7323415281. The cubic root of 77576149 is about 426.4905430170.

The spelling of 77576149 in words is "seventy-seven million, five hundred seventy-six thousand, one hundred forty-nine".