694423401 has 16 divisors (see below), whose sum is σ = 1070920704. Its totient is φ = 392031504.

The previous prime is 694423397. The next prime is 694423409. The reversal of 694423401 is 104324496.

It is not a de Polignac number, because 694423401 - 2² = 694423397 is a prime.

It is not an unprimeable number, because it can be changed into a prime (694423409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 197461 + ... + 200946.

It is an arithmetic number, because the mean of its divisors is an integer number (66932544).

Almost surely, 2^694423401 is an apocalyptic number.

It is an amenable number.

694423401 is a deficient number, since it is larger than the sum of its proper divisors (376497303).

694423401 is a wasteful number, since it uses less digits than its factorization.

694423401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398500.

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 694423401 is about 26351.9145604262. The cubic root of 694423401 is about 885.5398627632.

Adding to 694423401 its reverse (104324496), we get a palindrome (798747897).

The spelling of 694423401 in words is "six hundred ninety-four million, four hundred twenty-three thousand, four hundred one".