64906837 has 2 divisors, whose sum is σ = 64906838. Its totient is φ = 64906836.

The previous prime is 64906819. The next prime is 64906847. The reversal of 64906837 is 73860946.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33108516 + 31798321 = 5754^2 + 5639^2 .

It is a cyclic number.

It is not a de Polignac number, because 64906837 - 2²³ = 56518229 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64906793 and 64906802.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64906817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32453418 + 32453419.

It is an arithmetic number, because the mean of its divisors is an integer number (32453419).

Almost surely, 2^64906837 is an apocalyptic number.

It is an amenable number.

64906837 is a deficient number, since it is larger than the sum of its proper divisors (1).

64906837 is an equidigital number, since it uses as much as digits as its factorization.

64906837 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 43.

The square root of 64906837 is about 8056.4779525547. The cubic root of 64906837 is about 401.8803902298.

The spelling of 64906837 in words is "sixty-four million, nine hundred six thousand, eight hundred thirty-seven".