123997764 has 24 divisors (see below), whose sum is σ = 315631008. Its totient is φ = 37575040.

The previous prime is 123997759. The next prime is 123997829. The reversal of 123997764 is 467799321.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 469557 + ... + 469820.

It is an arithmetic number, because the mean of its divisors is an integer number (13151292).

Almost surely, 2^123997764 is an apocalyptic number.

It is an amenable number.

123997764 is an abundant number, since it is smaller than the sum of its proper divisors (191633244).

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

123997764 is a wasteful number, since it uses less digits than its factorization.

123997764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 939395 (or 939393 counting only the distinct ones).

The product of its digits is 571536, while the sum is 48.

The square root of 123997764 is about 11135.4283258436. The cubic root of 123997764 is about 498.6600978653.

The spelling of 123997764 in words is "one hundred twenty-three million, nine hundred ninety-seven thousand, seven hundred sixty-four".