65525870 has 16 divisors (see below), whose sum is σ = 124154640. Its totient is φ = 24830784.

The previous prime is 65525857. The next prime is 65525897. The reversal of 65525870 is 7852556.

It is a Harshad number since it is a multiple of its sum of digits (38).

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 7 ways as a sum of consecutive naturals, for example, 172247 + ... + 172626.

It is an arithmetic number, because the mean of its divisors is an integer number (7759665).

Almost surely, 2^65525870 is an apocalyptic number.

65525870 is a deficient number, since it is larger than the sum of its proper divisors (58628770).

65525870 is a wasteful number, since it uses less digits than its factorization.

65525870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344899.

The product of its (nonzero) digits is 84000, while the sum is 38.

The square root of 65525870 is about 8094.8051242757. The cubic root of 65525870 is about 403.1539617836.

The spelling of 65525870 in words is "sixty-five million, five hundred twenty-five thousand, eight hundred seventy".