61863080 has 32 divisors (see below), whose sum is σ = 139436640. Its totient is φ = 24701760.

The previous prime is 61863079. The next prime is 61863091. The reversal of 61863080 is 8036816.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31487 + ... + 33393.

It is an arithmetic number, because the mean of its divisors is an integer number (4357395).

Almost surely, 2^61863080 is an apocalyptic number.

It is an amenable number.

61863080 is an abundant number, since it is smaller than the sum of its proper divisors (77573560).

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

61863080 is a wasteful number, since it uses less digits than its factorization.

61863080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2729 (or 2725 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 61863080 is about 7865.3086398437. The cubic root of 61863080 is about 395.4975943399.

Adding to 61863080 its reverse (8036816), we get a palindrome (69899896).

The spelling of 61863080 in words is "sixty-one million, eight hundred sixty-three thousand, eighty".