690908557379 has 8 divisors (see below), whose sum is σ = 695898892080. Its totient is φ = 685918505376.

The previous prime is 690908557363. The next prime is 690908557439. The reversal of 690908557379 is 973755809096.

690908557379 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 690908557379 - 2⁴ = 690908557363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (690908557309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9247577 + ... + 9321989.

It is an arithmetic number, because the mean of its divisors is an integer number (86987361510).

Almost surely, 2^690908557379 is an apocalyptic number.

690908557379 is a deficient number, since it is larger than the sum of its proper divisors (4990334701).

690908557379 is a wasteful number, since it uses less digits than its factorization.

690908557379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141349.

The product of its (nonzero) digits is 128595600, while the sum is 68.

The spelling of 690908557379 in words is "six hundred ninety billion, nine hundred eight million, five hundred fifty-seven thousand, three hundred seventy-nine".