61868454 has 8 divisors (see below), whose sum is σ = 123736920. Its totient is φ = 20622816.

The previous prime is 61868419. The next prime is 61868461. The reversal of 61868454 is 45486816.

It is a sphenic number, since it is the product of 3 distinct primes.

61868454 is an admirable number.

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 3 ways as a sum of consecutive naturals, for example, 5155699 + ... + 5155710.

It is an arithmetic number, because the mean of its divisors is an integer number (15467115).

Almost surely, 2^61868454 is an apocalyptic number.

61868454 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

61868454 is a wasteful number, since it uses less digits than its factorization.

61868454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10311414.

The product of its digits is 184320, while the sum is 42.

The square root of 61868454 is about 7865.6502591966. The cubic root of 61868454 is about 395.5090462028.

The spelling of 61868454 in words is "sixty-one million, eight hundred sixty-eight thousand, four hundred fifty-four".