76749 has 4 divisors (see below), whose sum is σ = 102336. Its totient is φ = 51164.

The previous prime is 76733. The next prime is 76753. The reversal of 76749 is 94767.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 76749 - 2⁴ = 76733 is a prime.

It is a D-number.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

76749 is a lucky number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76249) 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, 12789 + ... + 12794.

It is an arithmetic number, because the mean of its divisors is an integer number (25584).

2⁷⁶⁷⁴⁹ is an apocalyptic number.

It is an amenable number.

76749 is a deficient number, since it is larger than the sum of its proper divisors (25587).

76749 is a wasteful number, since it uses less digits than its factorization.

76749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25586.

The product of its digits is 10584, while the sum is 33.

The square root of 76749 is about 277.0360987308. The cubic root of 76749 is about 42.4969317277.

The spelling of 76749 in words is "seventy-six thousand, seven hundred forty-nine".