70475621 has 2 divisors, whose sum is σ = 70475622. Its totient is φ = 70475620.

The previous prime is 70475599. The next prime is 70475627. The reversal of 70475621 is 12657407.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70392100 + 83521 = 8390^2 + 289^2 .

It is a cyclic number.

It is not a de Polignac number, because 70475621 - 2¹⁸ = 70213477 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70475627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35237810 + 35237811.

It is an arithmetic number, because the mean of its divisors is an integer number (35237811).

Almost surely, 2^70475621 is an apocalyptic number.

It is an amenable number.

70475621 is a deficient number, since it is larger than the sum of its proper divisors (1).

70475621 is an equidigital number, since it uses as much as digits as its factorization.

70475621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 70475621 is about 8394.9759380239. The cubic root of 70475621 is about 413.0598380781.

The spelling of 70475621 in words is "seventy million, four hundred seventy-five thousand, six hundred twenty-one".