4247723664 has 120 divisors (see below), whose sum is σ = 12387278592. Its totient is φ = 1357274880.

The previous prime is 4247723639. The next prime is 4247723677. The reversal of 4247723664 is 4663277424.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 473202 + ... + 482094.

Almost surely, 2^4247723664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4247723664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6193639296).

4247723664 is an abundant number, since it is smaller than the sum of its proper divisors (8139554928).

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

4247723664 is a wasteful number, since it uses less digits than its factorization.

4247723664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9045 (or 9036 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 45.

The square root of 4247723664 is about 65174.5630134948. The cubic root of 4247723664 is about 1619.5166550714.

The spelling of 4247723664 in words is "four billion, two hundred forty-seven million, seven hundred twenty-three thousand, six hundred sixty-four".