57661742 has 8 divisors (see below), whose sum is σ = 86871000. Its totient is φ = 28704744.

The previous prime is 57661717. The next prime is 57661757. The reversal of 57661742 is 24716675.

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

It is a junction number, because it is equal to n+sod(n) for n = 57661696 and 57661705.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62492 + ... + 63407.

It is an arithmetic number, because the mean of its divisors is an integer number (10858875).

Almost surely, 2^57661742 is an apocalyptic number.

57661742 is a deficient number, since it is larger than the sum of its proper divisors (29209258).

57661742 is a wasteful number, since it uses less digits than its factorization.

57661742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126130.

The product of its digits is 70560, while the sum is 38.

The square root of 57661742 is about 7593.5329063618. The cubic root of 57661742 is about 386.3336935621. Note that the first 3 decimals are identical.

The spelling of 57661742 in words is "fifty-seven million, six hundred sixty-one thousand, seven hundred forty-two".