622739966464 has 320 divisors, whose sum is σ = 1586387607552. Its totient is φ = 237171916800.

The previous prime is 622739966413. The next prime is 622739966477. The reversal of 622739966464 is 464669937226.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (64).

It is a junction number, because it is equal to n+sod(n) for n = 622739966396 and 622739966405.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1025930449 + ... + 1025931055.

Almost surely, 2^622739966464 is an apocalyptic number.

622739966464 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 622739966464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (793193803776).

622739966464 is an abundant number, since it is smaller than the sum of its proper divisors (963647641088).

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

622739966464 is a wasteful number, since it uses less digits than its factorization.

622739966464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1187 (or 1171 counting only the distinct ones).

The product of its digits is 141087744, while the sum is 64.

The spelling of 622739966464 in words is "six hundred twenty-two billion, seven hundred thirty-nine million, nine hundred sixty-six thousand, four hundred sixty-four".