540646634 has 48 divisors (see below), whose sum is σ = 968835840. Its totient is φ = 225244800.

The previous prime is 540646621. The next prime is 540646643. The reversal of 540646634 is 436646045.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 140642 + ... + 144434.

It is an arithmetic number, because the mean of its divisors is an integer number (20184080).

Almost surely, 2^540646634 is an apocalyptic number.

540646634 is a deficient number, since it is larger than the sum of its proper divisors (428189206).

540646634 is a wasteful number, since it uses less digits than its factorization.

540646634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3867 (or 3856 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 38.

The square root of 540646634 is about 23251.8092629369. The cubic root of 540646634 is about 814.6501987883.

The spelling of 540646634 in words is "five hundred forty million, six hundred forty-six thousand, six hundred thirty-four".