76800649 has 2 divisors, whose sum is σ = 76800650. Its totient is φ = 76800648.

The previous prime is 76800601. The next prime is 76800673. The reversal of 76800649 is 94600867.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76685049 + 115600 = 8757^2 + 340^2 .

It is a cyclic number.

It is not a de Polignac number, because 76800649 - 2¹⁵ = 76767881 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (76800349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38400324 + 38400325.

It is an arithmetic number, because the mean of its divisors is an integer number (38400325).

Almost surely, 2^76800649 is an apocalyptic number.

It is an amenable number.

76800649 is a deficient number, since it is larger than the sum of its proper divisors (1).

76800649 is an equidigital number, since it uses as much as digits as its factorization.

76800649 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 40.

The square root of 76800649 is about 8763.5979483315. The cubic root of 76800649 is about 425.0646250055.

The spelling of 76800649 in words is "seventy-six million, eight hundred thousand, six hundred forty-nine".