64906901 has 24 divisors (see below), whose sum is σ = 73998360. Its totient is φ = 56663040.

The previous prime is 64906889. The next prime is 64906931. The reversal of 64906901 is 10960946.

It can be written as a sum of positive squares in 4 ways, for example, as 20484676 + 44422225 = 4526^2 + 6665^2 .

It is not a de Polignac number, because 64906901 - 2⁶ = 64906837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64906931) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 473705 + ... + 473841.

It is an arithmetic number, because the mean of its divisors is an integer number (3083265).

Almost surely, 2^64906901 is an apocalyptic number.

It is an amenable number.

64906901 is a deficient number, since it is larger than the sum of its proper divisors (9091459).

64906901 is a wasteful number, since it uses less digits than its factorization.

64906901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245 (or 214 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 64906901 is about 8056.4819245127. The cubic root of 64906901 is about 401.8805223183.

The spelling of 64906901 in words is "sixty-four million, nine hundred six thousand, nine hundred one".