70223679637 has 2 divisors, whose sum is σ = 70223679638. Its totient is φ = 70223679636.

The previous prime is 70223679601. The next prime is 70223679677. The reversal of 70223679637 is 73697632207.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68690643921 + 1533035716 = 262089^2 + 39154^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70223679637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70223679677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35111839818 + 35111839819.

It is an arithmetic number, because the mean of its divisors is an integer number (35111839819).

Almost surely, 2^70223679637 is an apocalyptic number.

It is an amenable number.

70223679637 is a deficient number, since it is larger than the sum of its proper divisors (1).

70223679637 is an equidigital number, since it uses as much as digits as its factorization.

70223679637 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4000752, while the sum is 52.

The spelling of 70223679637 in words is "seventy billion, two hundred twenty-three million, six hundred seventy-nine thousand, six hundred thirty-seven".