82746749 has 4 divisors (see below), whose sum is σ = 84671136. Its totient is φ = 80822364.

The previous prime is 82746731. The next prime is 82746761. The reversal of 82746749 is 94764728.

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 a de Polignac number, because none of the positive numbers 2^k-82746749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82746149) 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, 962129 + ... + 962214.

It is an arithmetic number, because the mean of its divisors is an integer number (21167784).

Almost surely, 2^82746749 is an apocalyptic number.

It is an amenable number.

82746749 is a deficient number, since it is larger than the sum of its proper divisors (1924387).

82746749 is a wasteful number, since it uses less digits than its factorization.

82746749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1924386.

The product of its digits is 677376, while the sum is 47.

The square root of 82746749 is about 9096.5240064543. The cubic root of 82746749 is about 435.7629610304.

The spelling of 82746749 in words is "eighty-two million, seven hundred forty-six thousand, seven hundred forty-nine".