540465690 has 64 divisors (see below), whose sum is σ = 1357171200. Its totient is φ = 137602560.

The previous prime is 540465689. The next prime is 540465691. The reversal of 540465690 is 96564045.

It is an interprime number because it is at equal distance from previous prime (540465689) and next prime (540465691).

It is a super-2 number, since 2×540465690² = 584206324134352200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (540465691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53136 + ... + 62484.

It is an arithmetic number, because the mean of its divisors is an integer number (21205800).

Almost surely, 2^540465690 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 540465690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (678585600).

540465690 is an abundant number, since it is smaller than the sum of its proper divisors (816705510).

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

540465690 is a wasteful number, since it uses less digits than its factorization.

540465690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9447.

The product of its (nonzero) digits is 129600, while the sum is 39.

The square root of 540465690 is about 23247.9179712937. The cubic root of 540465690 is about 814.5593060782.

The spelling of 540465690 in words is "five hundred forty million, four hundred sixty-five thousand, six hundred ninety".