77140663 has 4 divisors (see below), whose sum is σ = 77160328. Its totient is φ = 77121000.

The previous prime is 77140631. The next prime is 77140699. The reversal of 77140663 is 36604177.

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 77140663 - 2⁵ = 77140631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77140603) 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, 1713 + ... + 12538.

It is an arithmetic number, because the mean of its divisors is an integer number (19290082).

Almost surely, 2^77140663 is an apocalyptic number.

77140663 is a deficient number, since it is larger than the sum of its proper divisors (19665).

77140663 is a wasteful number, since it uses less digits than its factorization.

77140663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19664.

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 77140663 is about 8782.9757485718. The cubic root of 77140663 is about 425.6909875961.

The spelling of 77140663 in words is "seventy-seven million, one hundred forty thousand, six hundred sixty-three".