64002869 has 6 divisors (see below), whose sum is σ = 74452374. Its totient is φ = 54859560.

The previous prime is 64002863. The next prime is 64002871. The reversal of 64002869 is 96820046.

It can be written as a sum of positive squares in only one way, i.e., 63123025 + 879844 = 7945^2 + 938^2 .

It is not a de Polignac number, because 64002869 - 2⁸ = 64002613 is a prime.

It is a super-2 number, since 2×64002869² = 8192734480462322, 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 (64002863) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 653042 + ... + 653139.

It is an arithmetic number, because the mean of its divisors is an integer number (12408729).

Almost surely, 2^64002869 is an apocalyptic number.

It is an amenable number.

64002869 is a deficient number, since it is larger than the sum of its proper divisors (10449505).

64002869 is a wasteful number, since it uses less digits than its factorization.

64002869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1306195 (or 1306188 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 64002869 is about 8000.1793104905. The cubic root of 64002869 is about 400.0059769940.

The spelling of 64002869 in words is "sixty-four million, two thousand, eight hundred sixty-nine".