694266992641 has 4 divisors (see below), whose sum is σ = 694920114112. Its totient is φ = 693613871172.

The previous prime is 694266992597. The next prime is 694266992651. The reversal of 694266992641 is 146299662496.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 694266992641 - 2³⁹ = 144511178753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (694266992651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 326559141 + ... + 326561266.

It is an arithmetic number, because the mean of its divisors is an integer number (173730028528).

Almost surely, 2^694266992641 is an apocalyptic number.

It is an amenable number.

694266992641 is a deficient number, since it is larger than the sum of its proper divisors (653121471).

694266992641 is a wasteful number, since it uses less digits than its factorization.

694266992641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 653121470.

The product of its digits is 60466176, while the sum is 64.

The spelling of 694266992641 in words is "six hundred ninety-four billion, two hundred sixty-six million, nine hundred ninety-two thousand, six hundred forty-one".