77268651 has 4 divisors (see below), whose sum is σ = 103024872. Its totient is φ = 51512432.

The previous prime is 77268637. The next prime is 77268679. The reversal of 77268651 is 15686277.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 77268651 - 2⁵ = 77268619 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77264651) 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 3 ways as a sum of consecutive naturals, for example, 12878106 + ... + 12878111.

It is an arithmetic number, because the mean of its divisors is an integer number (25756218).

Almost surely, 2^77268651 is an apocalyptic number.

77268651 is a deficient number, since it is larger than the sum of its proper divisors (25756221).

77268651 is a wasteful number, since it uses less digits than its factorization.

77268651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25756220.

The product of its digits is 141120, while the sum is 42.

The square root of 77268651 is about 8790.2588699082. The cubic root of 77268651 is about 425.9262860398.

The spelling of 77268651 in words is "seventy-seven million, two hundred sixty-eight thousand, six hundred fifty-one".