1972564 has 24 divisors (see below), whose sum is σ = 3806208. Its totient is φ = 887040.

The previous prime is 1972541. The next prime is 1972567. The reversal of 1972564 is 4652791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1972567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5412 + ... + 5764.

It is an arithmetic number, because the mean of its divisors is an integer number (158592).

2^1972564 is an apocalyptic number.

It is an amenable number.

1972564 is a deficient number, since it is larger than the sum of its proper divisors (1833644).

1972564 is a wasteful number, since it uses less digits than its factorization.

1972564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495 (or 493 counting only the distinct ones).

The product of its digits is 15120, while the sum is 34.

The square root of 1972564 is about 1404.4799749373. The cubic root of 1972564 is about 125.4133304239.

The spelling of 1972564 in words is "one million, nine hundred seventy-two thousand, five hundred sixty-four".