61868472 has 32 divisors (see below), whose sum is σ = 155360400. Its totient is φ = 20530944.

The previous prime is 61868461. The next prime is 61868473. The reversal of 61868472 is 27486816.

It is a super-2 number, since 2×61868472² = 7655415655229568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61868473) 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, 133 + ... + 11124.

Almost surely, 2^61868472 is an apocalyptic number.

It is an amenable number.

61868472 is an abundant number, since it is smaller than the sum of its proper divisors (93491928).

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

61868472 is a wasteful number, since it uses less digits than its factorization.

61868472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11495 (or 11491 counting only the distinct ones).

The product of its digits is 129024, while the sum is 42.

The square root of 61868472 is about 7865.6514034122. The cubic root of 61868472 is about 395.5090845592.

The spelling of 61868472 in words is "sixty-one million, eight hundred sixty-eight thousand, four hundred seventy-two".