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76649 is a prime number
BaseRepresentation
bin10010101101101001
310220010212
4102231221
54423044
61350505
7436316
oct225551
9126125
1076649
1152651
1238435
1328b71
141dd0d
1517a9e
hex12b69

76649 has 2 divisors, whose sum is σ = 76650. Its totient is φ = 76648.

The previous prime is 76631. The next prime is 76651. The reversal of 76649 is 94667.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75625 + 1024 = 275^2 + 32^2 .

It is a cyclic number.

It is not a de Polignac number, because 76649 - 216 = 11113 is a prime.

Together with 76651, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (76679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38324 + 38325.

It is an arithmetic number, because the mean of its divisors is an integer number (38325).

276649 is an apocalyptic number.

It is an amenable number.

76649 is a deficient number, since it is larger than the sum of its proper divisors (1).

76649 is an equidigital number, since it uses as much as digits as its factorization.

76649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 32.

The square root of 76649 is about 276.8555580081. The cubic root of 76649 is about 42.4784666002.

The spelling of 76649 in words is "seventy-six thousand, six hundred forty-nine".