61868460 has 24 divisors (see below), whose sum is σ = 173231856. Its totient is φ = 16498240.

The previous prime is 61868419. The next prime is 61868461. The reversal of 61868460 is 6486816.

It is not an unprimeable number, because it can be changed into a prime (61868461) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 515511 + ... + 515630.

It is an arithmetic number, because the mean of its divisors is an integer number (7217994).

Almost surely, 2^61868460 is an apocalyptic number.

61868460 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61868460 is an abundant number, since it is smaller than the sum of its proper divisors (111363396).

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

61868460 is a wasteful number, since it uses less digits than its factorization.

61868460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1031153 (or 1031151 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 61868460 is about 7865.6506406018. The cubic root of 61868460 is about 395.5090589883.

The spelling of 61868460 in words is "sixty-one million, eight hundred sixty-eight thousand, four hundred sixty".