61868372 has 12 divisors (see below), whose sum is σ = 114638580. Its totient is φ = 29114496.

The previous prime is 61868371. The next prime is 61868377. The reversal of 61868372 is 27386816.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 37405456 + 24462916 = 6116^2 + 4946^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61868371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 454847 + ... + 454982.

It is an arithmetic number, because the mean of its divisors is an integer number (9553215).

Almost surely, 2^61868372 is an apocalyptic number.

It is an amenable number.

61868372 is a deficient number, since it is larger than the sum of its proper divisors (52770208).

61868372 is a wasteful number, since it uses less digits than its factorization.

61868372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909850 (or 909848 counting only the distinct ones).

The product of its digits is 96768, while the sum is 41.

The square root of 61868372 is about 7865.6450466570. The cubic root of 61868372 is about 395.5088714678.

The spelling of 61868372 in words is "sixty-one million, eight hundred sixty-eight thousand, three hundred seventy-two".