64342237 has 2 divisors, whose sum is σ = 64342238. Its totient is φ = 64342236.

The previous prime is 64342219. The next prime is 64342241. The reversal of 64342237 is 73224346.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52911076 + 11431161 = 7274^2 + 3381^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64342237 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64342199 and 64342208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64342217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32171118 + 32171119.

It is an arithmetic number, because the mean of its divisors is an integer number (32171119).

Almost surely, 2^64342237 is an apocalyptic number.

It is an amenable number.

64342237 is a deficient number, since it is larger than the sum of its proper divisors (1).

64342237 is an equidigital number, since it uses as much as digits as its factorization.

64342237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 31.

The square root of 64342237 is about 8021.3612934464. The cubic root of 64342237 is about 400.7117266120.

The spelling of 64342237 in words is "sixty-four million, three hundred forty-two thousand, two hundred thirty-seven".