77045147 has 6 divisors (see below), whose sum is σ = 80541132. Its totient is φ = 73694852.

The previous prime is 77045131. The next prime is 77045159. The reversal of 77045147 is 74154077.

It is not a de Polignac number, because 77045147 - 2⁴ = 77045131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77045107) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 72293 + ... + 73350.

It is an arithmetic number, because the mean of its divisors is an integer number (13423522).

Almost surely, 2^77045147 is an apocalyptic number.

77045147 is a deficient number, since it is larger than the sum of its proper divisors (3495985).

77045147 is a wasteful number, since it uses less digits than its factorization.

77045147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145689 (or 145666 counting only the distinct ones).

The product of its (nonzero) digits is 27440, while the sum is 35.

The square root of 77045147 is about 8777.5364994969. The cubic root of 77045147 is about 425.5152173764.

The spelling of 77045147 in words is "seventy-seven million, forty-five thousand, one hundred forty-seven".