762738749 has 4 divisors (see below), whose sum is σ = 764899836. Its totient is φ = 760577664.

The previous prime is 762738707. The next prime is 762738799. The reversal of 762738749 is 947837267.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 947837267 = 13 ⋅72910559.

It can be written as a sum of positive squares in 2 ways, for example, as 542424100 + 220314649 = 23290^2 + 14843^2 .

It is a cyclic number.

It is not a de Polignac number, because 762738749 - 2¹⁶ = 762673213 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 762738749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (762738799) 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, 1080014 + ... + 1080719.

It is an arithmetic number, because the mean of its divisors is an integer number (191224959).

Almost surely, 2^762738749 is an apocalyptic number.

It is an amenable number.

762738749 is a deficient number, since it is larger than the sum of its proper divisors (2161087).

762738749 is a wasteful number, since it uses less digits than its factorization.

762738749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2161086.

The product of its digits is 3556224, while the sum is 53.

The square root of 762738749 is about 27617.7252683852. The cubic root of 762738749 is about 913.6754098817.

The spelling of 762738749 in words is "seven hundred sixty-two million, seven hundred thirty-eight thousand, seven hundred forty-nine".