15740564 has 18 divisors (see below), whose sum is σ = 32043690. Its totient is φ = 6745872.

The previous prime is 15740539. The next prime is 15740587. The reversal of 15740564 is 46504751.

It can be written as a sum of positive squares in only one way, i.e., 15147664 + 592900 = 3892^2 + 770^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 15740564.

It is a congruent 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 5 ways as a sum of consecutive naturals, for example, 39959 + ... + 40350.

It is an arithmetic number, because the mean of its divisors is an integer number (1780205).

Almost surely, 2^15740564 is an apocalyptic number.

15740564 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

15740564 is an abundant number, since it is smaller than the sum of its proper divisors (16303126).

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

15740564 is a wasteful number, since it uses less digits than its factorization.

15740564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80327 (or 80318 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 15740564 is about 3967.4379642283. The cubic root of 15740564 is about 250.6148280397.

The spelling of 15740564 in words is "fifteen million, seven hundred forty thousand, five hundred sixty-four".