694670464 has 16 divisors (see below), whose sum is σ = 1383914070. Its totient is φ = 347335168.

The previous prime is 694670453. The next prime is 694670513. The reversal of 694670464 is 464076496.

It can be written as a sum of positive squares in only one way, i.e., 690638400 + 4032064 = 26280^2 + 2008^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2713429 + ... + 2713684.

Almost surely, 2^694670464 is an apocalyptic number.

694670464 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

694670464 is a deficient number, since it is larger than the sum of its proper divisors (689243606).

694670464 is an equidigital number, since it uses as much as digits as its factorization.

694670464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5427127 (or 5427115 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 46.

The square root of 694670464 is about 26356.6019054050. The cubic root of 694670464 is about 885.6448698782.

The spelling of 694670464 in words is "six hundred ninety-four million, six hundred seventy thousand, four hundred sixty-four".