76464991 has 2 divisors, whose sum is σ = 76464992. Its totient is φ = 76464990.

The previous prime is 76464989. The next prime is 76465001. The reversal of 76464991 is 19946467.

It is a weak prime.

It is an emirp because it is prime and its reverse (19946467) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 76464991 - 2¹ = 76464989 is a prime.

Together with 76464989, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76464491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38232495 + 38232496.

It is an arithmetic number, because the mean of its divisors is an integer number (38232496).

Almost surely, 2^76464991 is an apocalyptic number.

76464991 is a deficient number, since it is larger than the sum of its proper divisors (1).

76464991 is an equidigital number, since it uses as much as digits as its factorization.

76464991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 326592, while the sum is 46.

The square root of 76464991 is about 8744.4262819238. The cubic root of 76464991 is about 424.4444709397. Note that the first 4 decimals are identical.

The spelling of 76464991 in words is "seventy-six million, four hundred sixty-four thousand, nine hundred ninety-one".