64283081 has 4 divisors (see below), whose sum is σ = 65336964. Its totient is φ = 63229200.

The previous prime is 64283059. The next prime is 64283123. The reversal of 64283081 is 18038246.

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

It can be written as a sum of positive squares in 2 ways, for example, as 14100025 + 50183056 = 3755^2 + 7084^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64283081 is a prime.

It is a super-2 number, since 2×64283081² = 8264629005705122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64283381) 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, 526850 + ... + 526971.

It is an arithmetic number, because the mean of its divisors is an integer number (16334241).

Almost surely, 2^64283081 is an apocalyptic number.

64283081 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

64283081 is a deficient number, since it is larger than the sum of its proper divisors (1053883).

64283081 is a wasteful number, since it uses less digits than its factorization.

64283081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1053882.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 64283081 is about 8017.6730414753. The cubic root of 64283081 is about 400.5888846949.

The spelling of 64283081 in words is "sixty-four million, two hundred eighty-three thousand, eighty-one".