694410000660 has 36 divisors (see below), whose sum is σ = 2106377002548. Its totient is φ = 185176000128.

The previous prime is 694410000643. The next prime is 694410000679. The reversal of 694410000660 is 66000014496.

It can be written as a sum of positive squares in 2 ways, for example, as 544236700176 + 150173300484 = 737724^2 + 387522^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1928916489 + ... + 1928916848.

It is an arithmetic number, because the mean of its divisors is an integer number (58510472293).

Almost surely, 2^694410000660 is an apocalyptic number.

694410000660 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

694410000660 is an abundant number, since it is smaller than the sum of its proper divisors (1411967001888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

694410000660 is a wasteful number, since it uses less digits than its factorization.

694410000660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3857833352 (or 3857833347 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The spelling of 694410000660 in words is "six hundred ninety-four billion, four hundred ten million, six hundred sixty", and thus it is an aban number.