64025669 has 4 divisors (see below), whose sum is σ = 64981344. Its totient is φ = 63069996.

The previous prime is 64025657. The next prime is 64025671. The reversal of 64025669 is 96652046.

64025669 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 64025669 - 2⁸ = 64025413 is a prime.

It is a super-2 number, since 2×64025669² = 8198572581795122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64025369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 477737 + ... + 477870.

It is an arithmetic number, because the mean of its divisors is an integer number (16245336).

Almost surely, 2^64025669 is an apocalyptic number.

It is an amenable number.

64025669 is a deficient number, since it is larger than the sum of its proper divisors (955675).

64025669 is an equidigital number, since it uses as much as digits as its factorization.

64025669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 955674.

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 64025669 is about 8001.6041516686. The cubic root of 64025669 is about 400.0534699354.

The spelling of 64025669 in words is "sixty-four million, twenty-five thousand, six hundred sixty-nine".