64811450 has 24 divisors (see below), whose sum is σ = 131509440. Its totient is φ = 23567600.

The previous prime is 64811443. The next prime is 64811459. The reversal of 64811450 is 5411846.

It is a super-2 number, since 2×64811450² = 8401048102205000, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64811459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58370 + ... + 59469.

It is an arithmetic number, because the mean of its divisors is an integer number (5479560).

Almost surely, 2^64811450 is an apocalyptic number.

64811450 is an abundant number, since it is smaller than the sum of its proper divisors (66697990).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64811450 is a wasteful number, since it uses less digits than its factorization.

64811450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117862 (or 117857 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 64811450 is about 8050.5558814283. Note that the first 3 decimals coincide. The cubic root of 64811450 is about 401.6834260859.

The spelling of 64811450 in words is "sixty-four million, eight hundred eleven thousand, four hundred fifty".