64630843 has 4 divisors (see below), whose sum is σ = 64861128. Its totient is φ = 64400560.

The previous prime is 64630831. The next prime is 64630847. The reversal of 64630843 is 34803646.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64630843 is a prime.

It is a super-3 number, since 3×64630843³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64630799 and 64630808.

It is not an unprimeable number, because it can be changed into a prime (64630847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114721 + ... + 115282.

It is an arithmetic number, because the mean of its divisors is an integer number (16215282).

Almost surely, 2^64630843 is an apocalyptic number.

64630843 is a deficient number, since it is larger than the sum of its proper divisors (230285).

64630843 is a wasteful number, since it uses less digits than its factorization.

64630843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230284.

The product of its (nonzero) digits is 41472, while the sum is 34.

The square root of 64630843 is about 8039.3310045053. The cubic root of 64630843 is about 401.3099615686.

The spelling of 64630843 in words is "sixty-four million, six hundred thirty thousand, eight hundred forty-three".