694506493 has 4 divisors (see below), whose sum is σ = 694559488. Its totient is φ = 694453500.

The previous prime is 694506479. The next prime is 694506497. The reversal of 694506493 is 394605496.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 694506493 - 2²⁹ = 157635581 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 (694506497) 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, 9118 + ... + 38368.

It is an arithmetic number, because the mean of its divisors is an integer number (173639872).

Almost surely, 2^694506493 is an apocalyptic number.

It is an amenable number.

694506493 is a deficient number, since it is larger than the sum of its proper divisors (52995).

694506493 is a wasteful number, since it uses less digits than its factorization.

694506493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52994.

The product of its (nonzero) digits is 699840, while the sum is 46.

The square root of 694506493 is about 26353.4910970065. The cubic root of 694506493 is about 885.5751814384.

The spelling of 694506493 in words is "six hundred ninety-four million, five hundred six thousand, four hundred ninety-three".