623704487616 has 448 divisors, whose sum is σ = 2152020648960. Its totient is φ = 173418209280.

The previous prime is 623704487543. The next prime is 623704487633. The reversal of 623704487616 is 616784407326.

623704487616 is a `hidden beast` number, since 62 + 3 + 70 + 448 + 76 + 1 + 6 = 666.

623704487616 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (448).

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 231600766 + ... + 231603458.

It is an arithmetic number, because the mean of its divisors is an integer number (4803617520).

Almost surely, 2^623704487616 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 623704487616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1076010324480).

623704487616 is an abundant number, since it is smaller than the sum of its proper divisors (1528316161344).

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

623704487616 is a wasteful number, since it uses less digits than its factorization.

623704487616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3229 (or 3213 counting only the distinct ones).

The product of its (nonzero) digits is 8128512, while the sum is 54.

The spelling of 623704487616 in words is "six hundred twenty-three billion, seven hundred four million, four hundred eighty-seven thousand, six hundred sixteen".