57645890 has 8 divisors (see below), whose sum is σ = 103762620. Its totient is φ = 23058352.

The previous prime is 57645869. The next prime is 57645899. The reversal of 57645890 is 9854675.

It can be written as a sum of positive squares in 2 ways, for example, as 54656449 + 2989441 = 7393^2 + 1729^2 .

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

It is not an unprimeable number, because it can be changed into a prime (57645899) 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, 2882285 + ... + 2882304.

Almost surely, 2^57645890 is an apocalyptic number.

57645890 is a deficient number, since it is larger than the sum of its proper divisors (46116730).

57645890 is a wasteful number, since it uses less digits than its factorization.

57645890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5764596.

The product of its (nonzero) digits is 302400, while the sum is 44.

The square root of 57645890 is about 7592.4890516879. The cubic root of 57645890 is about 386.2982875153.

The spelling of 57645890 in words is "fifty-seven million, six hundred forty-five thousand, eight hundred ninety".