64076819 has 2 divisors, whose sum is σ = 64076820. Its totient is φ = 64076818.

The previous prime is 64076813. The next prime is 64076851. The reversal of 64076819 is 91867046.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64076819 is a prime.

It is a super-2 number, since 2×64076819² = 8211677466317522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (64076813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32038409 + 32038410.

It is an arithmetic number, because the mean of its divisors is an integer number (32038410).

Almost surely, 2^64076819 is an apocalyptic number.

64076819 is a deficient number, since it is larger than the sum of its proper divisors (1).

64076819 is an equidigital number, since it uses as much as digits as its factorization.

64076819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 64076819 is about 8004.7997476514. The cubic root of 64076819 is about 400.1599755943.

Adding to 64076819 its sum of digits (41), we get a triangular number (64076860 = T₁₁₃₂₀).

The spelling of 64076819 in words is "sixty-four million, seventy-six thousand, eight hundred nineteen".