646112545 has 16 divisors (see below), whose sum is σ = 842788800. Its totient is φ = 472665024.

The previous prime is 646112521. The next prime is 646112569. The reversal of 646112545 is 545211646.

It is an interprime number because it is at equal distance from previous prime (646112521) and next prime (646112569).

It is not a de Polignac number, because 646112545 - 2¹¹ = 646110497 is a prime.

It is a super-2 number, since 2×646112545² = 834922841612754050, 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 646112545.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39495 + ... + 53404.

It is an arithmetic number, because the mean of its divisors is an integer number (52674300).

Almost surely, 2^646112545 is an apocalyptic number.

646112545 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

646112545 is a deficient number, since it is larger than the sum of its proper divisors (196676255).

646112545 is a wasteful number, since it uses less digits than its factorization.

646112545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93024.

The product of its digits is 28800, while the sum is 34.

The square root of 646112545 is about 25418.7439697559. The cubic root of 646112545 is about 864.5087457495.

The spelling of 646112545 in words is "six hundred forty-six million, one hundred twelve thousand, five hundred forty-five".