645424702 has 8 divisors (see below), whose sum is σ = 1042609176. Its totient is φ = 297888312.

The previous prime is 645424693. The next prime is 645424709. The reversal of 645424702 is 207424546.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (645424709) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12411988 + ... + 12412039.

It is an arithmetic number, because the mean of its divisors is an integer number (130326147).

Almost surely, 2^645424702 is an apocalyptic number.

645424702 is a deficient number, since it is larger than the sum of its proper divisors (397184474).

645424702 is a wasteful number, since it uses less digits than its factorization.

645424702 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24824042.

The product of its (nonzero) digits is 53760, while the sum is 34.

The square root of 645424702 is about 25405.2101349310. The cubic root of 645424702 is about 864.2018552363.

The spelling of 645424702 in words is "six hundred forty-five million, four hundred twenty-four thousand, seven hundred two".