646067125 has 64 divisors (see below), whose sum is σ = 948879360. Its totient is φ = 434280000.

The previous prime is 646067117. The next prime is 646067137. The reversal of 646067125 is 521760646.

It is a happy number.

It is not a de Polignac number, because 646067125 - 2³ = 646067117 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 980046 + ... + 980704.

It is an arithmetic number, because the mean of its divisors is an integer number (14826240).

Almost surely, 2^646067125 is an apocalyptic number.

It is an amenable number.

646067125 is a deficient number, since it is larger than the sum of its proper divisors (302812235).

646067125 is a wasteful number, since it uses less digits than its factorization.

646067125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 739 (or 729 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 646067125 is about 25417.8505188775. The cubic root of 646067125 is about 864.4884877167.

The spelling of 646067125 in words is "six hundred forty-six million, sixty-seven thousand, one hundred twenty-five".