77940699 has 12 divisors (see below), whose sum is σ = 110394744. Its totient is φ = 48903424.

The previous prime is 77940697. The next prime is 77940701. The reversal of 77940699 is 99604977.

It is an interprime number because it is at equal distance from previous prime (77940697) and next prime (77940701).

It is not a de Polignac number, because 77940699 - 2¹ = 77940697 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (77940697) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44082 + ... + 45815.

It is an arithmetic number, because the mean of its divisors is an integer number (9199562).

Almost surely, 2^77940699 is an apocalyptic number.

77940699 is a deficient number, since it is larger than the sum of its proper divisors (32454045).

77940699 is a wasteful number, since it uses less digits than its factorization.

77940699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89934 (or 89917 counting only the distinct ones).

The product of its (nonzero) digits is 857304, while the sum is 51.

The square root of 77940699 is about 8828.4029699601. The cubic root of 77940699 is about 427.1575616868.

The spelling of 77940699 in words is "seventy-seven million, nine hundred forty thousand, six hundred ninety-nine".