623021652 has 48 divisors (see below), whose sum is σ = 1762084800. Its totient is φ = 188794080.

The previous prime is 623021629. The next prime is 623021653. The reversal of 623021652 is 256120326.

623021652 is a `hidden beast` number, since 6 + 2 + 3 + 0 + 2 + 1 + 652 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623021653) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 261027 + ... + 263402.

It is an arithmetic number, because the mean of its divisors is an integer number (36710100).

Almost surely, 2^623021652 is an apocalyptic number.

It is an amenable number.

623021652 is an abundant number, since it is smaller than the sum of its proper divisors (1139063148).

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

623021652 is a wasteful number, since it uses less digits than its factorization.

623021652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524453 (or 524445 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 623021652 is about 24960.4016794602. The cubic root of 623021652 is about 854.0849058250.

Adding to 623021652 its reverse (256120326), we get a palindrome (879141978).

The spelling of 623021652 in words is "six hundred twenty-three million, twenty-one thousand, six hundred fifty-two".