64341985 has 8 divisors (see below), whose sum is σ = 77273640. Its totient is φ = 51431424.

The previous prime is 64341983. The next prime is 64342009. The reversal of 64341985 is 58914346.

It can be written as a sum of positive squares in 4 ways, for example, as 1361889 + 62980096 = 1167^2 + 7936^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 64341985 - 2¹ = 64341983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64341983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2479 + ... + 11611.

It is an arithmetic number, because the mean of its divisors is an integer number (9659205).

Almost surely, 2^64341985 is an apocalyptic number.

It is an amenable number.

64341985 is a deficient number, since it is larger than the sum of its proper divisors (12931655).

64341985 is a wasteful number, since it uses less digits than its factorization.

64341985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10547.

The product of its digits is 103680, while the sum is 40.

The square root of 64341985 is about 8021.3455853741. The cubic root of 64341985 is about 400.7112034746.

The spelling of 64341985 in words is "sixty-four million, three hundred forty-one thousand, nine hundred eighty-five".