540090690 has 16 divisors (see below), whose sum is σ = 1296217728. Its totient is φ = 144024176.

The previous prime is 540090667. The next prime is 540090701. The reversal of 540090690 is 96090045.

It is a happy number.

It is a super-2 number, since 2×540090690² = 583395906849352200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9001482 + ... + 9001541.

It is an arithmetic number, because the mean of its divisors is an integer number (81013608).

Almost surely, 2^540090690 is an apocalyptic number.

540090690 is an abundant number, since it is smaller than the sum of its proper divisors (756127038).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

540090690 is a wasteful number, since it uses less digits than its factorization.

540090690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18003033.

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 540090690 is about 23239.8513334315. The cubic root of 540090690 is about 814.3708695625.

The spelling of 540090690 in words is "five hundred forty million, ninety thousand, six hundred ninety".