34686601621 has 6 divisors (see below), whose sum is σ = 40349720310. Its totient is φ = 29731372776.

The previous prime is 34686601613. The next prime is 34686601637. The reversal of 34686601621 is 12610668643.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 20361863025 + 14324738596 = 142695^2 + 119686^2 .

It is not a de Polignac number, because 34686601621 - 2³ = 34686601613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34686631621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 353944866 + ... + 353944963.

It is an arithmetic number, because the mean of its divisors is an integer number (6724953385).

Almost surely, 2^34686601621 is an apocalyptic number.

It is an amenable number.

34686601621 is a deficient number, since it is larger than the sum of its proper divisors (5663118689).

34686601621 is an equidigital number, since it uses as much as digits as its factorization.

34686601621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707889843 (or 707889836 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 43.

The spelling of 34686601621 in words is "thirty-four billion, six hundred eighty-six million, six hundred one thousand, six hundred twenty-one".