646035475 has 12 divisors (see below), whose sum is σ = 802828576. Its totient is φ = 515702880.

The previous prime is 646035463. The next prime is 646035487. The reversal of 646035475 is 574530646.

It is an interprime number because it is at equal distance from previous prime (646035463) and next prime (646035487).

It is not a de Polignac number, because 646035475 - 2¹⁷ = 645904403 is a prime.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16332 + ... + 39481.

Almost surely, 2^646035475 is an apocalyptic number.

646035475 is a deficient number, since it is larger than the sum of its proper divisors (156793101).

646035475 is a wasteful number, since it uses less digits than its factorization.

646035475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56286 (or 56281 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 40.

The square root of 646035475 is about 25417.2279173005. The cubic root of 646035475 is about 864.4743707587.

The spelling of 646035475 in words is "six hundred forty-six million, thirty-five thousand, four hundred seventy-five".