61868468 has 6 divisors (see below), whose sum is σ = 108269826. Its totient is φ = 30934232.

The previous prime is 61868461. The next prime is 61868473. The reversal of 61868468 is 86486816.

It can be written as a sum of positive squares in only one way, i.e., 42876304 + 18992164 = 6548^2 + 4358^2 .

It is a congruent number.

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 as a sum of consecutive naturals, namely, 7733555 + ... + 7733562.

It is an arithmetic number, because the mean of its divisors is an integer number (18044971).

Almost surely, 2^61868468 is an apocalyptic number.

It is an amenable number.

61868468 is a deficient number, since it is larger than the sum of its proper divisors (46401358).

61868468 is a wasteful number, since it uses less digits than its factorization.

61868468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15467121 (or 15467119 counting only the distinct ones).

The product of its digits is 442368, while the sum is 47.

The square root of 61868468 is about 7865.6511491421. The cubic root of 61868468 is about 395.5090760356.

The spelling of 61868468 in words is "sixty-one million, eight hundred sixty-eight thousand, four hundred sixty-eight".