66259245 has 64 divisors (see below), whose sum is σ = 120121344. Its totient is φ = 30965760.

The previous prime is 66259223. The next prime is 66259261. The reversal of 66259245 is 54295266.

It is not a de Polignac number, because 66259245 - 2⁸ = 66258989 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

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, 586309 + ... + 586421.

It is an arithmetic number, because the mean of its divisors is an integer number (1876896).

Almost surely, 2^66259245 is an apocalyptic number.

66259245 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

66259245 is a deficient number, since it is larger than the sum of its proper divisors (53862099).

66259245 is a wasteful number, since it uses less digits than its factorization.

66259245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262.

The product of its digits is 129600, while the sum is 39.

The square root of 66259245 is about 8139.9781940740. The cubic root of 66259245 is about 404.6524376782.

The spelling of 66259245 in words is "sixty-six million, two hundred fifty-nine thousand, two hundred forty-five".