690022453 has 4 divisors (see below), whose sum is σ = 693635328. Its totient is φ = 686409580.

The previous prime is 690022451. The next prime is 690022477. The reversal of 690022453 is 354220096.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 690022453 - 2¹ = 690022451 is a prime.

It is a super-2 number, since 2×690022453² = 952261971288274418, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690022451) 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, 1806151 + ... + 1806532.

It is an arithmetic number, because the mean of its divisors is an integer number (173408832).

Almost surely, 2^690022453 is an apocalyptic number.

It is an amenable number.

690022453 is a deficient number, since it is larger than the sum of its proper divisors (3612875).

690022453 is a wasteful number, since it uses less digits than its factorization.

690022453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3612874.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 690022453 is about 26268.2784552014. The cubic root of 690022453 is about 883.6651770248.

The spelling of 690022453 in words is "six hundred ninety million, twenty-two thousand, four hundred fifty-three".