70621097 has 2 divisors, whose sum is σ = 70621098. Its totient is φ = 70621096.

The previous prime is 70621037. The next prime is 70621099. The reversal of 70621097 is 79012607.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62663056 + 7958041 = 7916^2 + 2821^2 .

It is an emirp because it is prime and its reverse (79012607) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70621097 - 2⁸ = 70620841 is a prime.

Together with 70621099, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (70621099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35310548 + 35310549.

It is an arithmetic number, because the mean of its divisors is an integer number (35310549).

Almost surely, 2^70621097 is an apocalyptic number.

It is an amenable number.

70621097 is a deficient number, since it is larger than the sum of its proper divisors (1).

70621097 is an equidigital number, since it uses as much as digits as its factorization.

70621097 is an evil number, because the sum of its binary digits is even.

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

The square root of 70621097 is about 8403.6359392825. The cubic root of 70621097 is about 413.3438558860.

The spelling of 70621097 in words is "seventy million, six hundred twenty-one thousand, ninety-seven".