56701890 has 128 divisors (see below), whose sum is σ = 182016000. Its totient is φ = 12270528.

The previous prime is 56701889. The next prime is 56701903. The reversal of 56701890 is 9810765.

56701890 is a `hidden beast` number, since 567 + 0 + 1 + 8 + 90 = 666.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 35121 + ... + 36699.

It is an arithmetic number, because the mean of its divisors is an integer number (1422000).

Almost surely, 2^56701890 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56701890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91008000).

56701890 is an abundant number, since it is smaller than the sum of its proper divisors (125314110).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56701890 is a wasteful number, since it uses less digits than its factorization.

56701890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1621 (or 1615 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 56701890 is about 7530.0657367649. The cubic root of 56701890 is about 384.1780180460.

The spelling of 56701890 in words is "fifty-six million, seven hundred one thousand, eight hundred ninety".