690409784063 has 8 divisors (see below), whose sum is σ = 731067895008. Its totient is φ = 649756758784.

The previous prime is 690409784059. The next prime is 690409784101. The reversal of 690409784063 is 360487904096.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 690409784063 - 2² = 690409784059 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690409784033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 990131 + ... + 1536612.

It is an arithmetic number, because the mean of its divisors is an integer number (91383486876).

Almost surely, 2^690409784063 is an apocalyptic number.

690409784063 is a deficient number, since it is larger than the sum of its proper divisors (40658110945).

690409784063 is a wasteful number, since it uses less digits than its factorization.

690409784063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2542833.

The product of its (nonzero) digits is 7838208, while the sum is 56.

The spelling of 690409784063 in words is "six hundred ninety billion, four hundred nine million, seven hundred eighty-four thousand, sixty-three".