690310345 has 8 divisors (see below), whose sum is σ = 856937160. Its totient is φ = 533205120.

The previous prime is 690310331. The next prime is 690310417. The reversal of 690310345 is 543013096.

It can be written as a sum of positive squares in 4 ways, for example, as 182439049 + 507871296 = 13507^2 + 22536^2 .

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

It is not a de Polignac number, because 690310345 - 2¹⁹ = 689786057 is a prime.

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 in 7 ways as a sum of consecutive naturals, for example, 2380236 + ... + 2380525.

It is an arithmetic number, because the mean of its divisors is an integer number (107117145).

Almost surely, 2^690310345 is an apocalyptic number.

It is an amenable number.

690310345 is a deficient number, since it is larger than the sum of its proper divisors (166626815).

690310345 is a wasteful number, since it uses less digits than its factorization.

690310345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4760795.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 690310345 is about 26273.7577251523. The cubic root of 690310345 is about 883.7880545543.

The spelling of 690310345 in words is "six hundred ninety million, three hundred ten thousand, three hundred forty-five".