61863628 has 12 divisors (see below), whose sum is σ = 108860752. Its totient is φ = 30760560.

The previous prime is 61863623. The next prime is 61863679. The reversal of 61863628 is 82636816.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (61863623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42000 + ... + 43447.

Almost surely, 2^61863628 is an apocalyptic number.

It is an amenable number.

61863628 is a deficient number, since it is larger than the sum of its proper divisors (46997124).

61863628 is a wasteful number, since it uses less digits than its factorization.

61863628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85632 (or 85630 counting only the distinct ones).

The product of its digits is 82944, while the sum is 40.

The square root of 61863628 is about 7865.3434762889. The cubic root of 61863628 is about 395.4987621449.

It can be divided in two parts, 618 and 63628, that added together give a palindrome (64246).

The spelling of 61863628 in words is "sixty-one million, eight hundred sixty-three thousand, six hundred twenty-eight".