77486157 has 12 divisors (see below), whose sum is σ = 127913760. Its totient is φ = 44277768.

The previous prime is 77486147. The next prime is 77486191. The reversal of 77486157 is 75168477.

It is not a de Polignac number, because 77486157 - 2¹² = 77482061 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77486137) 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 11 ways as a sum of consecutive naturals, for example, 614907 + ... + 615032.

It is an arithmetic number, because the mean of its divisors is an integer number (10659480).

Almost surely, 2^77486157 is an apocalyptic number.

It is an amenable number.

77486157 is a deficient number, since it is larger than the sum of its proper divisors (50427603).

77486157 is a wasteful number, since it uses less digits than its factorization.

77486157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1229952 (or 1229949 counting only the distinct ones).

The product of its digits is 329280, while the sum is 45.

The square root of 77486157 is about 8802.6221661503. The cubic root of 77486157 is about 426.3255628087.

The spelling of 77486157 in words is "seventy-seven million, four hundred eighty-six thousand, one hundred fifty-seven".