690012553 has 4 divisors (see below), whose sum is σ = 696711808. Its totient is φ = 683313300.

The previous prime is 690012551. The next prime is 690012637. The reversal of 690012553 is 355210096.

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 690012553 - 2¹ = 690012551 is a prime.

It is a super-2 number, since 2×690012553² = 952234646595155618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (690012551) 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, 3349473 + ... + 3349678.

It is an arithmetic number, because the mean of its divisors is an integer number (174177952).

Almost surely, 2^690012553 is an apocalyptic number.

It is an amenable number.

690012553 is a deficient number, since it is larger than the sum of its proper divisors (6699255).

690012553 is a wasteful number, since it uses less digits than its factorization.

690012553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6699254.

The product of its (nonzero) digits is 8100, while the sum is 31.

The square root of 690012553 is about 26268.0900143120. The cubic root of 690012553 is about 883.6609509174.

The spelling of 690012553 in words is "six hundred ninety million, twelve thousand, five hundred fifty-three".