645414635 has 8 divisors (see below), whose sum is σ = 780596736. Its totient is φ = 512265600.

The previous prime is 645414613. The next prime is 645414647. The reversal of 645414635 is 536414546.

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

It is not a de Polignac number, because 645414635 - 2⁸ = 645414379 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 507566 + ... + 508835.

It is an arithmetic number, because the mean of its divisors is an integer number (97574592).

Almost surely, 2^645414635 is an apocalyptic number.

645414635 is a deficient number, since it is larger than the sum of its proper divisors (135182101).

645414635 is a wasteful number, since it uses less digits than its factorization.

645414635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1016533.

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

The square root of 645414635 is about 25405.0120055079. The cubic root of 645414635 is about 864.1973620887.

The spelling of 645414635 in words is "six hundred forty-five million, four hundred fourteen thousand, six hundred thirty-five".