61857382 has 8 divisors (see below), whose sum is σ = 93517056. Its totient is φ = 30685032.

The previous prime is 61857329. The next prime is 61857421. The reversal of 61857382 is 28375816.

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

It is a congruent number.

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, 121513 + ... + 122020.

It is an arithmetic number, because the mean of its divisors is an integer number (11689632).

Almost surely, 2^61857382 is an apocalyptic number.

61857382 is a deficient number, since it is larger than the sum of its proper divisors (31659674).

61857382 is a wasteful number, since it uses less digits than its factorization.

61857382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243662.

The product of its digits is 80640, while the sum is 40.

The square root of 61857382 is about 7864.9464079547. The cubic root of 61857382 is about 395.4854513165.

The spelling of 61857382 in words is "sixty-one million, eight hundred fifty-seven thousand, three hundred eighty-two".