690365 has 24 divisors (see below), whose sum is σ = 966240. Its totient is φ = 471744.

The previous prime is 690341. The next prime is 690367. The reversal of 690365 is 563096.

690365 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 690365 - 2¹⁰ = 689341 is a prime.

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

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 690365.

It is not an unprimeable number, because it can be changed into a prime (690367) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16034 + ... + 16076.

It is an arithmetic number, because the mean of its divisors is an integer number (40260).

2⁶⁹⁰³⁶⁵ is an apocalyptic number.

690365 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

690365 is a deficient number, since it is larger than the sum of its proper divisors (275875).

690365 is a wasteful number, since it uses less digits than its factorization.

690365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93 (or 80 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 29.

The square root of 690365 is about 830.8820614263. The cubic root of 690365 is about 88.3811378441.

The spelling of 690365 in words is "six hundred ninety thousand, three hundred sixty-five".