75991679 has 4 divisors (see below), whose sum is σ = 76010784. Its totient is φ = 75972576.

The previous prime is 75991631. The next prime is 75991681. The reversal of 75991679 is 97619957.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97619957 = 2281 ⋅42797.

It is a cyclic number.

It is not a de Polignac number, because 75991679 - 2¹⁶ = 75926143 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 75991679.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75990679) 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, 1082 + ... + 12375.

It is an arithmetic number, because the mean of its divisors is an integer number (19002696).

Almost surely, 2^75991679 is an apocalyptic number.

75991679 is a deficient number, since it is larger than the sum of its proper divisors (19105).

75991679 is a wasteful number, since it uses less digits than its factorization.

75991679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19104.

The product of its digits is 1071630, while the sum is 53.

The square root of 75991679 is about 8717.3206319373. The cubic root of 75991679 is about 423.5668989630.

The spelling of 75991679 in words is "seventy-five million, nine hundred ninety-one thousand, six hundred seventy-nine".