64676737 has 2 divisors, whose sum is σ = 64676738. Its totient is φ = 64676736.

The previous prime is 64676719. The next prime is 64676761. The reversal of 64676737 is 73767646.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64496961 + 179776 = 8031^2 + 424^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64676737 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (64676707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32338368 + 32338369.

It is an arithmetic number, because the mean of its divisors is an integer number (32338369).

Almost surely, 2^64676737 is an apocalyptic number.

It is an amenable number.

64676737 is a deficient number, since it is larger than the sum of its proper divisors (1).

64676737 is an equidigital number, since it uses as much as digits as its factorization.

64676737 is an evil number, because the sum of its binary digits is even.

The product of its digits is 889056, while the sum is 46.

The square root of 64676737 is about 8042.1848399549. The cubic root of 64676737 is about 401.4049284131.

Subtracting 64676737 from its reverse (73767646), we obtain a palindrome (9090909).

The spelling of 64676737 in words is "sixty-four million, six hundred seventy-six thousand, seven hundred thirty-seven".