645301156 has 24 divisors (see below), whose sum is σ = 1219014720. Its totient is φ = 297978912.

The previous prime is 645301109. The next prime is 645301207. The reversal of 645301156 is 651103546.

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, 118266 + ... + 123601.

It is an arithmetic number, because the mean of its divisors is an integer number (50792280).

Almost surely, 2^645301156 is an apocalyptic number.

It is an amenable number.

645301156 is a deficient number, since it is larger than the sum of its proper divisors (573713564).

645301156 is a wasteful number, since it uses less digits than its factorization.

645301156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241923 (or 241921 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 645301156 is about 25402.7785094466. The cubic root of 645301156 is about 864.1467104118.

The spelling of 645301156 in words is "six hundred forty-five million, three hundred one thousand, one hundred fifty-six".