684752494 has 12 divisors (see below), whose sum is σ = 1049371344. Its totient is φ = 334967492.

The previous prime is 684752479. The next prime is 684752501. The reversal of 684752494 is 494257486.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 252357 + ... + 255055.

It is an arithmetic number, because the mean of its divisors is an integer number (87447612).

Almost surely, 2^684752494 is an apocalyptic number.

684752494 is a deficient number, since it is larger than the sum of its proper divisors (364618850).

684752494 is an frugal number, since it uses more digits than its factorization.

684752494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5447 (or 2748 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 49.

The square root of 684752494 is about 26167.7758703333. The cubic root of 684752494 is about 881.4097986025.

The spelling of 684752494 in words is "six hundred eighty-four million, seven hundred fifty-two thousand, four hundred ninety-four".