76743769 has 4 divisors (see below), whose sum is σ = 76767796. Its totient is φ = 76719744.

The previous prime is 76743757. The next prime is 76743811. The reversal of 76743769 is 96734767.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96734767 = 653 ⋅148139.

It can be written as a sum of positive squares in 2 ways, for example, as 26163225 + 50580544 = 5115^2 + 7112^2 .

It is a cyclic number.

It is not a de Polignac number, because 76743769 - 2⁹ = 76743257 is a prime.

It is a super-2 number, since 2×76743769² = 11779212160650722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76743749) 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, 6324 + ... + 13909.

It is an arithmetic number, because the mean of its divisors is an integer number (19191949).

Almost surely, 2^76743769 is an apocalyptic number.

It is an amenable number.

76743769 is a deficient number, since it is larger than the sum of its proper divisors (24027).

76743769 is a wasteful number, since it uses less digits than its factorization.

76743769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24026.

The product of its digits is 1333584, while the sum is 49.

The square root of 76743769 is about 8760.3521047958. The cubic root of 76743769 is about 424.9596621462.

The spelling of 76743769 in words is "seventy-six million, seven hundred forty-three thousand, seven hundred sixty-nine".