761666474 has 4 divisors (see below), whose sum is σ = 1142499714. Its totient is φ = 380833236.

The previous prime is 761666473. The next prime is 761666489. The reversal of 761666474 is 474666167.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 474666167 = 8627 ⋅55021.

It can be written as a sum of positive squares in only one way, i.e., 444577225 + 317089249 = 21085^2 + 17807^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (761666473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190416617 + ... + 190416620.

Almost surely, 2^761666474 is an apocalyptic number.

761666474 is a deficient number, since it is larger than the sum of its proper divisors (380833240).

761666474 is a wasteful number, since it uses less digits than its factorization.

761666474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380833239.

The product of its digits is 1016064, while the sum is 47.

The square root of 761666474 is about 27598.3056363973. The cubic root of 761666474 is about 913.2470540564.

The spelling of 761666474 in words is "seven hundred sixty-one million, six hundred sixty-six thousand, four hundred seventy-four".