645352662 has 8 divisors (see below), whose sum is σ = 1290705336. Its totient is φ = 215117552.

The previous prime is 645352649. The next prime is 645352663. The reversal of 645352662 is 266253546.

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

645352662 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 645352662.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (645352663) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 53779383 + ... + 53779394.

It is an arithmetic number, because the mean of its divisors is an integer number (161338167).

Almost surely, 2^645352662 is an apocalyptic number.

645352662 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

645352662 is a wasteful number, since it uses less digits than its factorization.

645352662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107558782.

The product of its digits is 259200, while the sum is 39.

The square root of 645352662 is about 25403.7922759575. The cubic root of 645352662 is about 864.1697009984.

The spelling of 645352662 in words is "six hundred forty-five million, three hundred fifty-two thousand, six hundred sixty-two".