68633424 has 60 divisors (see below), whose sum is σ = 192651732. Its totient is φ = 22809600.

The previous prime is 68633387. The next prime is 68633429. The reversal of 68633424 is 42433686.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 19184400 + 49449024 = 4380^2 + 7032^2 .

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 a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68633429) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77464 + ... + 78344.

Almost surely, 2^68633424 is an apocalyptic number.

It is an amenable number.

68633424 is an abundant number, since it is smaller than the sum of its proper divisors (124018308).

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

68633424 is a wasteful number, since it uses less digits than its factorization.

68633424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1436 (or 1427 counting only the distinct ones).

The product of its digits is 82944, while the sum is 36.

The square root of 68633424 is about 8284.5291960376. The cubic root of 68633424 is about 409.4289571596.

The spelling of 68633424 in words is "sixty-eight million, six hundred thirty-three thousand, four hundred twenty-four".