76738749 has 4 divisors (see below), whose sum is σ = 102318336. Its totient is φ = 51159164.

The previous prime is 76738747. The next prime is 76738759. The reversal of 76738749 is 94783767.

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 76738749 - 2¹ = 76738747 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76738747) 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, 12789789 + ... + 12789794.

It is an arithmetic number, because the mean of its divisors is an integer number (25579584).

Almost surely, 2^76738749 is an apocalyptic number.

It is an amenable number.

76738749 is a deficient number, since it is larger than the sum of its proper divisors (25579587).

76738749 is a wasteful number, since it uses less digits than its factorization.

76738749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25579586.

The product of its digits is 1778112, while the sum is 51.

The square root of 76738749 is about 8760.0655819463. The cubic root of 76738749 is about 424.9503960561.

The spelling of 76738749 in words is "seventy-six million, seven hundred thirty-eight thousand, seven hundred forty-nine".