690140315 has 4 divisors (see below), whose sum is σ = 828168384. Its totient is φ = 552112248.

The previous prime is 690140309. The next prime is 690140329. The reversal of 690140315 is 513041096.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 690140315 - 2⁴ = 690140299 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69014027 + ... + 69014036.

It is an arithmetic number, because the mean of its divisors is an integer number (207042096).

Almost surely, 2^690140315 is an apocalyptic number.

690140315 is a deficient number, since it is larger than the sum of its proper divisors (138028069).

690140315 is a wasteful number, since it uses less digits than its factorization.

690140315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138028068.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 690140315 is about 26270.5217877377. The cubic root of 690140315 is about 883.7154867963.

The spelling of 690140315 in words is "six hundred ninety million, one hundred forty thousand, three hundred fifteen".