623770877394 has 288 divisors, whose sum is σ = 1641352121136. Its totient is φ = 170559406080.

The previous prime is 623770877383. The next prime is 623770877441. The reversal of 623770877394 is 493778077326.

623770877394 is a `hidden beast` number, since 6 + 237 + 7 + 0 + 8 + 7 + 7 + 394 = 666.

623770877394 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 378671621769 + 245099255625 = 615363^2 + 495075^2 .

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 610940604 + ... + 610941624.

Almost surely, 2^623770877394 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 623770877394, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (820676060568).

623770877394 is an abundant number, since it is smaller than the sum of its proper divisors (1017581243742).

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

623770877394 is a wasteful number, since it uses less digits than its factorization.

623770877394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1370 (or 1360 counting only the distinct ones).

The product of its (nonzero) digits is 74680704, while the sum is 63.

The spelling of 623770877394 in words is "six hundred twenty-three billion, seven hundred seventy million, eight hundred seventy-seven thousand, three hundred ninety-four".