761856745 has 8 divisors (see below), whose sum is σ = 984553416. Its totient is φ = 562601856.

The previous prime is 761856743. The next prime is 761856769. The reversal of 761856745 is 547658167.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6046681 + 755810064 = 2459^2 + 27492^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 761856745 - 2¹ = 761856743 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (761856743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5860372 + ... + 5860501.

It is an arithmetic number, because the mean of its divisors is an integer number (123069177).

Almost surely, 2^761856745 is an apocalyptic number.

It is an amenable number.

761856745 is a deficient number, since it is larger than the sum of its proper divisors (222696671).

761856745 is a wasteful number, since it uses less digits than its factorization.

761856745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11720891.

The product of its digits is 1411200, while the sum is 49.

The square root of 761856745 is about 27601.7525711684. The cubic root of 761856745 is about 913.3230934467.

The spelling of 761856745 in words is "seven hundred sixty-one million, eight hundred fifty-six thousand, seven hundred forty-five".