623261772 has 108 divisors (see below), whose sum is σ = 1846779480. Its totient is φ = 176706432.

The previous prime is 623261761. The next prime is 623261819. The reversal of 623261772 is 277162326.

It is a happy number.

623261772 is a `hidden beast` number, since 6 + 2 + 32 + 617 + 7 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 240379 + ... + 242957.

It is an arithmetic number, because the mean of its divisors is an integer number (17099810).

Almost surely, 2^623261772 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 623261772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (923389740).

623261772 is an abundant number, since it is smaller than the sum of its proper divisors (1223517708).

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

623261772 is a wasteful number, since it uses less digits than its factorization.

623261772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2740 (or 2728 counting only the distinct ones).

The product of its digits is 42336, while the sum is 36.

The square root of 623261772 is about 24965.2112348364. The cubic root of 623261772 is about 854.1946165792.

The spelling of 623261772 in words is "six hundred twenty-three million, two hundred sixty-one thousand, seven hundred seventy-two".