70660591 has 2 divisors, whose sum is σ = 70660592. Its totient is φ = 70660590.

The previous prime is 70660561. The next prime is 70660609. The reversal of 70660591 is 19506607.

It is a strong prime.

It is an emirp because it is prime and its reverse (19506607) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70660591 - 2²³ = 62271983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70660561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35330295 + 35330296.

It is an arithmetic number, because the mean of its divisors is an integer number (35330296).

Almost surely, 2^70660591 is an apocalyptic number.

70660591 is a deficient number, since it is larger than the sum of its proper divisors (1).

70660591 is an equidigital number, since it uses as much as digits as its factorization.

70660591 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11340, while the sum is 34.

The square root of 70660591 is about 8405.9854270633. The cubic root of 70660591 is about 413.4208940553.

The spelling of 70660591 in words is "seventy million, six hundred sixty thousand, five hundred ninety-one".