64234861 has 2 divisors, whose sum is σ = 64234862. Its totient is φ = 64234860.

The previous prime is 64234847. The next prime is 64234897. The reversal of 64234861 is 16843246.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58446025 + 5788836 = 7645^2 + 2406^2 .

It is a cyclic number.

It is not a de Polignac number, because 64234861 - 2⁹ = 64234349 is a prime.

It is a super-2 number, since 2×64234861² = 8252234735378642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64234061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32117430 + 32117431.

It is an arithmetic number, because the mean of its divisors is an integer number (32117431).

Almost surely, 2^64234861 is an apocalyptic number.

It is an amenable number.

64234861 is a deficient number, since it is larger than the sum of its proper divisors (1).

64234861 is an equidigital number, since it uses as much as digits as its factorization.

64234861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27648, while the sum is 34.

The square root of 64234861 is about 8014.6653704319. The cubic root of 64234861 is about 400.4886964463.

The spelling of 64234861 in words is "sixty-four million, two hundred thirty-four thousand, eight hundred sixty-one".