61650266 has 4 divisors (see below), whose sum is σ = 92475402. Its totient is φ = 30825132.

The previous prime is 61650263. The next prime is 61650271. The reversal of 61650266 is 66205616.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 53071225 + 8579041 = 7285^2 + 2929^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61650263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15412565 + ... + 15412568.

Almost surely, 2^61650266 is an apocalyptic number.

61650266 is a deficient number, since it is larger than the sum of its proper divisors (30825136).

61650266 is a wasteful number, since it uses less digits than its factorization.

61650266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30825135.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 61650266 is about 7851.7683358591. The cubic root of 61650266 is about 395.0435587279.

It can be divided in two parts, 61650 and 266, that added together give a palindrome (61916).

The spelling of 61650266 in words is "sixty-one million, six hundred fifty thousand, two hundred sixty-six".