690333064 has 8 divisors (see below), whose sum is σ = 1294374510. Its totient is φ = 345166528.

The previous prime is 690333053. The next prime is 690333073. The reversal of 690333064 is 460333096.

It can be written as a sum of positive squares in only one way, i.e., 360620100 + 329712964 = 18990^2 + 18158^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43145809 + ... + 43145824.

Almost surely, 2^690333064 is an apocalyptic number.

It is an amenable number.

690333064 is a deficient number, since it is larger than the sum of its proper divisors (604041446).

690333064 is a wasteful number, since it uses less digits than its factorization.

690333064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86291639 (or 86291635 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 34.

The square root of 690333064 is about 26274.1900731497. The cubic root of 690333064 is about 883.7977499812.

The spelling of 690333064 in words is "six hundred ninety million, three hundred thirty-three thousand, sixty-four".