690974 has 4 divisors (see below), whose sum is σ = 1036464. Its totient is φ = 345486.

The previous prime is 690953. The next prime is 690997. The reversal of 690974 is 479096.

It is a happy number.

690974 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172742 + ... + 172745.

It is an arithmetic number, because the mean of its divisors is an integer number (259116).

2⁶⁹⁰⁹⁷⁴ is an apocalyptic number.

690974 is a deficient number, since it is larger than the sum of its proper divisors (345490).

690974 is a wasteful number, since it uses less digits than its factorization.

690974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345489.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 690974 is about 831.2484586452. The cubic root of 690974 is about 88.4071184456.

The spelling of 690974 in words is "six hundred ninety thousand, nine hundred seventy-four".