70620791 has 2 divisors, whose sum is σ = 70620792. Its totient is φ = 70620790.

The previous prime is 70620779. The next prime is 70620811. The reversal of 70620791 is 19702607.

It is a weak prime.

It is an emirp because it is prime and its reverse (19702607) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70620791 - 2⁶ = 70620727 is a prime.

It is a super-2 number, since 2×70620791² = 9974592242931362, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70620731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35310395 + 35310396.

It is an arithmetic number, because the mean of its divisors is an integer number (35310396).

Almost surely, 2^70620791 is an apocalyptic number.

70620791 is a deficient number, since it is larger than the sum of its proper divisors (1).

70620791 is an equidigital number, since it uses as much as digits as its factorization.

70620791 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5292, while the sum is 32.

The square root of 70620791 is about 8403.6177328577. The cubic root of 70620791 is about 413.3432588812.

The spelling of 70620791 in words is "seventy million, six hundred twenty thousand, seven hundred ninety-one".