77161651 has 16 divisors (see below), whose sum is σ = 90604800. Its totient is φ = 64336608.

The previous prime is 77161627. The next prime is 77161661. The reversal of 77161651 is 15616177.

It is not a de Polignac number, because 77161651 - 2¹¹ = 77159603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77161621) 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 15 ways as a sum of consecutive naturals, for example, 116760 + ... + 117418.

It is an arithmetic number, because the mean of its divisors is an integer number (5662800).

Almost surely, 2^77161651 is an apocalyptic number.

77161651 is a deficient number, since it is larger than the sum of its proper divisors (13443149).

77161651 is a wasteful number, since it uses less digits than its factorization.

77161651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1098.

The product of its digits is 8820, while the sum is 34.

The square root of 77161651 is about 8784.1704787646. The cubic root of 77161651 is about 425.7295906361.

The spelling of 77161651 in words is "seventy-seven million, one hundred sixty-one thousand, six hundred fifty-one".