65570450 has 48 divisors (see below), whose sum is σ = 137669760. Its totient is φ = 23016000.

The previous prime is 65570443. The next prime is 65570467. The reversal of 65570450 is 5407556.

It is a happy number.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13895 + ... + 18005.

It is an arithmetic number, because the mean of its divisors is an integer number (2868120).

Almost surely, 2^65570450 is an apocalyptic number.

65570450 is an abundant number, since it is smaller than the sum of its proper divisors (72099310).

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

65570450 is a wasteful number, since it uses less digits than its factorization.

65570450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4163 (or 4158 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 32.

The square root of 65570450 is about 8097.5582739490. The cubic root of 65570450 is about 403.2453685787.

The spelling of 65570450 in words is "sixty-five million, five hundred seventy thousand, four hundred fifty".