76749679 has 4 divisors (see below), whose sum is σ = 81264384. Its totient is φ = 72234976.

The previous prime is 76749677. The next prime is 76749733. The reversal of 76749679 is 97694767.

It is a happy number.

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 76749679 - 2¹ = 76749677 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 (76749677) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2257327 + ... + 2257360.

It is an arithmetic number, because the mean of its divisors is an integer number (20316096).

Almost surely, 2^76749679 is an apocalyptic number.

76749679 is a deficient number, since it is larger than the sum of its proper divisors (4514705).

76749679 is a wasteful number, since it uses less digits than its factorization.

76749679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4514704.

The product of its digits is 4000752, while the sum is 55.

The square root of 76749679 is about 8760.6894135108. The cubic root of 76749679 is about 424.9705705112.

The spelling of 76749679 in words is "seventy-six million, seven hundred forty-nine thousand, six hundred seventy-nine".