76666741 has 4 divisors (see below), whose sum is σ = 77064172. Its totient is φ = 76269312.

The previous prime is 76666739. The next prime is 76666817. The reversal of 76666741 is 14766667.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19980900 + 56685841 = 4470^2 + 7529^2 .

It is a cyclic number.

It is not a de Polignac number, because 76666741 - 2¹ = 76666739 is a prime.

It is a super-2 number, since 2×76666741² = 11755578351122162, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76660741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198426 + ... + 198811.

It is an arithmetic number, because the mean of its divisors is an integer number (19266043).

Almost surely, 2^76666741 is an apocalyptic number.

It is an amenable number.

76666741 is a deficient number, since it is larger than the sum of its proper divisors (397431).

76666741 is a wasteful number, since it uses less digits than its factorization.

76666741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397430.

The product of its digits is 254016, while the sum is 43.

The square root of 76666741 is about 8755.9546024406. The cubic root of 76666741 is about 424.8174366988.

The spelling of 76666741 in words is "seventy-six million, six hundred sixty-six thousand, seven hundred forty-one".