74706810637 has 2 divisors, whose sum is σ = 74706810638. Its totient is φ = 74706810636.

The previous prime is 74706810631. The next prime is 74706810719. The reversal of 74706810637 is 73601860747.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44516358121 + 30190452516 = 210989^2 + 173754^2 .

It is a cyclic number.

It is not a de Polignac number, because 74706810637 - 2⁷ = 74706810509 is a prime.

It is a super-2 number, since 2×74706810637² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74706810631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37353405318 + 37353405319.

It is an arithmetic number, because the mean of its divisors is an integer number (37353405319).

Almost surely, 2^74706810637 is an apocalyptic number.

It is an amenable number.

74706810637 is a deficient number, since it is larger than the sum of its proper divisors (1).

74706810637 is an equidigital number, since it uses as much as digits as its factorization.

74706810637 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1185408, while the sum is 49.

The spelling of 74706810637 in words is "seventy-four billion, seven hundred six million, eight hundred ten thousand, six hundred thirty-seven".