664061435 has 8 divisors (see below), whose sum is σ = 797120016. Its totient is φ = 531084960.

The previous prime is 664061399. The next prime is 664061441. The reversal of 664061435 is 534160466.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 664061435 - 2⁶ = 664061371 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 664061395 and 664061404.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1049 + ... + 36458.

It is an arithmetic number, because the mean of its divisors is an integer number (99640002).

Almost surely, 2^664061435 is an apocalyptic number.

664061435 is a deficient number, since it is larger than the sum of its proper divisors (133058581).

664061435 is a wasteful number, since it uses less digits than its factorization.

664061435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41053.

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 664061435 is about 25769.3894960668. The cubic root of 664061435 is about 872.4410394664.

The spelling of 664061435 in words is "six hundred sixty-four million, sixty-one thousand, four hundred thirty-five".