77015497 has 12 divisors (see below), whose sum is σ = 84194640. Its totient is φ = 70410288.

The previous prime is 77015479. The next prime is 77015513. The reversal of 77015497 is 79451077.

It is not a de Polignac number, because 77015497 - 2¹¹ = 77013449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77015597) 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, 15954 + ... + 20212.

It is an arithmetic number, because the mean of its divisors is an integer number (7016220).

Almost surely, 2^77015497 is an apocalyptic number.

It is an amenable number.

77015497 is a deficient number, since it is larger than the sum of its proper divisors (7179143).

77015497 is a wasteful number, since it uses less digits than its factorization.

77015497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4392 (or 4379 counting only the distinct ones).

The product of its (nonzero) digits is 61740, while the sum is 40.

The square root of 77015497 is about 8775.8473664940. The cubic root of 77015497 is about 425.4606253808.

The spelling of 77015497 in words is "seventy-seven million, fifteen thousand, four hundred ninety-seven".