70798621 has 2 divisors, whose sum is σ = 70798622. Its totient is φ = 70798620.

The previous prime is 70798571. The next prime is 70798633. The reversal of 70798621 is 12689707.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55666521 + 15132100 = 7461^2 + 3890^2 .

It is a cyclic number.

It is not a de Polignac number, because 70798621 - 2⁷ = 70798493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70793621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35399310 + 35399311.

It is an arithmetic number, because the mean of its divisors is an integer number (35399311).

Almost surely, 2^70798621 is an apocalyptic number.

It is an amenable number.

70798621 is a deficient number, since it is larger than the sum of its proper divisors (1).

70798621 is an equidigital number, since it uses as much as digits as its factorization.

70798621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42336, while the sum is 40.

The square root of 70798621 is about 8414.1916426951. The cubic root of 70798621 is about 413.6899142095.

The spelling of 70798621 in words is "seventy million, seven hundred ninety-eight thousand, six hundred twenty-one".