77416545 has 16 divisors (see below), whose sum is σ = 130386240. Its totient is φ = 39115584.

The previous prime is 77416541. The next prime is 77416553. The reversal of 77416545 is 54561477.

It is not a de Polignac number, because 77416545 - 2² = 77416541 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77416541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135534 + ... + 136103.

It is an arithmetic number, because the mean of its divisors is an integer number (8149140).

Almost surely, 2^77416545 is an apocalyptic number.

It is an amenable number.

77416545 is a deficient number, since it is larger than the sum of its proper divisors (52969695).

77416545 is a wasteful number, since it uses less digits than its factorization.

77416545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271664.

The product of its digits is 117600, while the sum is 39.

The square root of 77416545 is about 8798.6672286205. The cubic root of 77416545 is about 426.1978571305.

The spelling of 77416545 in words is "seventy-seven million, four hundred sixteen thousand, five hundred forty-five".