690995 has 8 divisors (see below), whose sum is σ = 837216. Its totient is φ = 547456.

The previous prime is 690953. The next prime is 690997. The reversal of 690995 is 599096.

690995 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 690995 - 2¹⁸ = 428851 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (690997) 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, 47 + ... + 1176.

It is an arithmetic number, because the mean of its divisors is an integer number (104652).

2⁶⁹⁰⁹⁹⁵ is an apocalyptic number.

690995 is a deficient number, since it is larger than the sum of its proper divisors (146221).

690995 is a wasteful number, since it uses less digits than its factorization.

690995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1341.

The product of its (nonzero) digits is 21870, while the sum is 38.

The square root of 690995 is about 831.2610901516. The cubic root of 690995 is about 88.4080140561.

The spelling of 690995 in words is "six hundred ninety thousand, nine hundred ninety-five".