6440612235 has 32 divisors (see below), whose sum is σ = 10643699712. Its totient is φ = 3322218240.

The previous prime is 6440612219. The next prime is 6440612257. The reversal of 6440612235 is 5322160446.

It is not a de Polignac number, because 6440612235 - 2⁴ = 6440612219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6440612196 and 6440612205.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1102392 + ... + 1108218.

It is an arithmetic number, because the mean of its divisors is an integer number (332615616).

Almost surely, 2^6440612235 is an apocalyptic number.

6440612235 is a deficient number, since it is larger than the sum of its proper divisors (4203087477).

6440612235 is a wasteful number, since it uses less digits than its factorization.

6440612235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8243.

The product of its (nonzero) digits is 34560, while the sum is 33.

The square root of 6440612235 is about 80253.4250670960. The cubic root of 6440612235 is about 1860.5544494025.

The spelling of 6440612235 in words is "six billion, four hundred forty million, six hundred twelve thousand, two hundred thirty-five".