61636368 has 40 divisors (see below), whose sum is σ = 164721600. Its totient is φ = 19836544.

The previous prime is 61636357. The next prime is 61636369. The reversal of 61636368 is 86363616.

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

It is not an unprimeable number, because it can be changed into a prime (61636369) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20748 + ... + 23531.

It is an arithmetic number, because the mean of its divisors is an integer number (4118040).

Almost surely, 2^61636368 is an apocalyptic number.

It is an amenable number.

61636368 is an abundant number, since it is smaller than the sum of its proper divisors (103085232).

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

61636368 is a wasteful number, since it uses less digits than its factorization.

61636368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44319 (or 44313 counting only the distinct ones).

The product of its digits is 93312, while the sum is 39.

The square root of 61636368 is about 7850.8832624107. The cubic root of 61636368 is about 395.0138712215.

The spelling of 61636368 in words is "sixty-one million, six hundred thirty-six thousand, three hundred sixty-eight".