61381772 has 12 divisors (see below), whose sum is σ = 108931536. Its totient is φ = 30258480.

The previous prime is 61381763. The next prime is 61381783. The reversal of 61381772 is 27718316.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107783 + ... + 108350.

It is an arithmetic number, because the mean of its divisors is an integer number (9077628).

Almost surely, 2^61381772 is an apocalyptic number.

It is an amenable number.

61381772 is a deficient number, since it is larger than the sum of its proper divisors (47549764).

61381772 is a wasteful number, since it uses less digits than its factorization.

61381772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216208 (or 216206 counting only the distinct ones).

The product of its digits is 14112, while the sum is 35.

The square root of 61381772 is about 7834.6520024823. The cubic root of 61381772 is about 394.4692374609.

The spelling of 61381772 in words is "sixty-one million, three hundred eighty-one thousand, seven hundred seventy-two".