690707 has 4 divisors (see below), whose sum is σ = 727080. Its totient is φ = 654336.

The previous prime is 690689. The next prime is 690719. The reversal of 690707 is 707096.

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 690707 - 2¹² = 686611 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 690707.

It is not an unprimeable number, because it can be changed into a prime (690757) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18158 + ... + 18195.

It is an arithmetic number, because the mean of its divisors is an integer number (181770).

2⁶⁹⁰⁷⁰⁷ is an apocalyptic number.

690707 is a deficient number, since it is larger than the sum of its proper divisors (36373).

690707 is a wasteful number, since it uses less digits than its factorization.

690707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36372.

The product of its (nonzero) digits is 2646, while the sum is 29.

The square root of 690707 is about 831.0878413261. The cubic root of 690707 is about 88.3957298156.

The spelling of 690707 in words is "six hundred ninety thousand, seven hundred seven".