645083415 has 24 divisors (see below), whose sum is σ = 1166761440. Its totient is φ = 329085504.

The previous prime is 645083401. The next prime is 645083429. The reversal of 645083415 is 514380546.

It is a happy number.

645083415 is a `hidden beast` number, since 645 + 0 + 8 + 3 + 4 + 1 + 5 = 666.

645083415 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (645083401) and next prime (645083429).

It is not a de Polignac number, because 645083415 - 2⁴ = 645083399 is a prime.

It is a super-2 number, since 2×645083415² = 832265224616124450, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 645083415.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 310600 + ... + 312669.

It is an arithmetic number, because the mean of its divisors is an integer number (48615060).

Almost surely, 2^645083415 is an apocalyptic number.

645083415 is a deficient number, since it is larger than the sum of its proper divisors (521678025).

645083415 is a wasteful number, since it uses less digits than its factorization.

645083415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623303 (or 623300 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 645083415 is about 25398.4923765172. The cubic root of 645083415 is about 864.0495044616.

The spelling of 645083415 in words is "six hundred forty-five million, eighty-three thousand, four hundred fifteen".