61868700 has 54 divisors (see below), whose sum is σ = 193926824. Its totient is φ = 16498080.

The previous prime is 61868683. The next prime is 61868711. The reversal of 61868700 is 786816.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 33472 + ... + 35271.

Almost surely, 2^61868700 is an apocalyptic number.

61868700 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61868700 is an abundant number, since it is smaller than the sum of its proper divisors (132058124).

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

61868700 is a wasteful number, since it uses less digits than its factorization.

61868700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68763 (or 68753 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 61868700 is about 7865.6658967948. The cubic root of 61868700 is about 395.5095704069.

The spelling of 61868700 in words is "sixty-one million, eight hundred sixty-eight thousand, seven hundred".