694989361 has 4 divisors (see below), whose sum is σ = 758170224. Its totient is φ = 631808500.

The previous prime is 694989343. The next prime is 694989397. The reversal of 694989361 is 163989496.

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 694989361 - 2⁷ = 694989233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (694989301) 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, 31590415 + ... + 31590436.

It is an arithmetic number, because the mean of its divisors is an integer number (189542556).

Almost surely, 2^694989361 is an apocalyptic number.

It is an amenable number.

694989361 is a deficient number, since it is larger than the sum of its proper divisors (63180863).

694989361 is a wasteful number, since it uses less digits than its factorization.

694989361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63180862.

The product of its digits is 2519424, while the sum is 55.

The square root of 694989361 is about 26362.6508720197. The cubic root of 694989361 is about 885.7803711939.

The spelling of 694989361 in words is "six hundred ninety-four million, nine hundred eighty-nine thousand, three hundred sixty-one".