540140690 has 16 divisors (see below), whose sum is σ = 972957528. Its totient is φ = 215899776.

The previous prime is 540140681. The next prime is 540140719. The reversal of 540140690 is 96041045.

It can be written as a sum of positive squares in 4 ways, for example, as 427207561 + 112933129 = 20669^2 + 10627^2 .

It is a super-2 number, since 2×540140690² = 583503929987352200, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4517 + ... + 33176.

Almost surely, 2^540140690 is an apocalyptic number.

540140690 is a deficient number, since it is larger than the sum of its proper divisors (432816838).

540140690 is a wasteful number, since it uses less digits than its factorization.

540140690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39133.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 540140690 is about 23240.9270469145. The cubic root of 540140690 is about 814.3959994699.

The spelling of 540140690 in words is "five hundred forty million, one hundred forty thousand, six hundred ninety".