76685149 has 2 divisors, whose sum is σ = 76685150. Its totient is φ = 76685148.

The previous prime is 76685137. The next prime is 76685171. The reversal of 76685149 is 94158667.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76685049 + 100 = 8757^2 + 10^2 .

It is a cyclic number.

It is not a de Polignac number, because 76685149 - 2²³ = 68296541 is a prime.

It is a super-2 number, since 2×76685149² = 11761224154304402, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 76685099 and 76685108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76685179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38342574 + 38342575.

It is an arithmetic number, because the mean of its divisors is an integer number (38342575).

Almost surely, 2^76685149 is an apocalyptic number.

It is an amenable number.

76685149 is a deficient number, since it is larger than the sum of its proper divisors (1).

76685149 is an equidigital number, since it uses as much as digits as its factorization.

76685149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 362880, while the sum is 46.

The square root of 76685149 is about 8757.0057097161. The cubic root of 76685149 is about 424.8514341162.

The spelling of 76685149 in words is "seventy-six million, six hundred eighty-five thousand, one hundred forty-nine".