6201321664 has 28 divisors (see below), whose sum is σ = 12310795800. Its totient is φ = 3099388928.

The previous prime is 6201321661. The next prime is 6201321667. The reversal of 6201321664 is 4661231026.

It is an interprime number because it is at equal distance from previous prime (6201321661) and next prime (6201321667).

It is not an unprimeable number, because it can be changed into a prime (6201321661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148407 + ... + 185545.

Almost surely, 2^6201321664 is an apocalyptic number.

6201321664 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

6201321664 is a deficient number, since it is larger than the sum of its proper divisors (6109474136).

6201321664 is a wasteful number, since it uses less digits than its factorization.

6201321664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39760 (or 39750 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 6201321664 is about 78748.4708676937. The cubic root of 6201321664 is about 1837.2210792582.

The spelling of 6201321664 in words is "six billion, two hundred one million, three hundred twenty-one thousand, six hundred sixty-four".