1356545664 has 64 divisors (see below), whose sum is σ = 4003704000. Its totient is φ = 452180736.

The previous prime is 1356545623. The next prime is 1356545683. The reversal of 1356545664 is 4665456531.

1356545664 is a `hidden beast` number, since 1 + 35 + 6 + 54 + 566 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×1356545664² = 3680432277034401792, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 192804 + ... + 199715.

It is an arithmetic number, because the mean of its divisors is an integer number (62557875).

Almost surely, 2^1356545664 is an apocalyptic number.

It is an amenable number.

1356545664 is an abundant number, since it is smaller than the sum of its proper divisors (2647158336).

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

1356545664 is an equidigital number, since it uses as much as digits as its factorization.

1356545664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392542 (or 392524 counting only the distinct ones).

The product of its digits is 1296000, while the sum is 45.

The square root of 1356545664 is about 36831.3136339175. The cubic root of 1356545664 is about 1106.9928246243.

The spelling of 1356545664 in words is "one billion, three hundred fifty-six million, five hundred forty-five thousand, six hundred sixty-four".