1720002564 has 36 divisors (see below), whose sum is σ = 4968897024. Its totient is φ = 491429232.

The previous prime is 1720002551. The next prime is 1720002577. The reversal of 1720002564 is 4652000271.

It is an interprime number because it is at equal distance from previous prime (1720002551) and next prime (1720002577).

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3412452 + ... + 3412955.

Almost surely, 2^1720002564 is an apocalyptic number.

1720002564 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1720002564 is an abundant number, since it is smaller than the sum of its proper divisors (3248894460).

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

1720002564 is a wasteful number, since it uses less digits than its factorization.

1720002564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6825424 (or 6825419 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 1720002564 is about 41472.9136184088. The cubic root of 1720002564 is about 1198.1458783362.

The spelling of 1720002564 in words is "one billion, seven hundred twenty million, two thousand, five hundred sixty-four".