645346514 has 8 divisors (see below), whose sum is σ = 1018968240. Its totient is φ = 305690436.

The previous prime is 645346487. The next prime is 645346523. The reversal of 645346514 is 415643546.

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

It is a Harshad number since it is a multiple of its sum of digits (38), and also a Moran number because the ratio is a prime number: 16982803 = 645346514 / (6 + 4 + 5 + 3 + 4 + 6 + 5 + 1 + 4).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8491364 + ... + 8491439.

It is an arithmetic number, because the mean of its divisors is an integer number (127371030).

Almost surely, 2^645346514 is an apocalyptic number.

645346514 is a deficient number, since it is larger than the sum of its proper divisors (373621726).

645346514 is a wasteful number, since it uses less digits than its factorization.

645346514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16982824.

The product of its digits is 172800, while the sum is 38.

The square root of 645346514 is about 25403.6712701137. The cubic root of 645346514 is about 864.1669567975.

The spelling of 645346514 in words is "six hundred forty-five million, three hundred forty-six thousand, five hundred fourteen".