61606906 has 4 divisors (see below), whose sum is σ = 92410362. Its totient is φ = 30803452.

The previous prime is 61606901. The next prime is 61606907. The reversal of 61606906 is 60960616.

It is a happy number.

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., 58384881 + 3222025 = 7641^2 + 1795^2 .

It is not an unprimeable number, because it can be changed into a prime (61606901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15401725 + ... + 15401728.

Almost surely, 2^61606906 is an apocalyptic number.

61606906 is a deficient number, since it is larger than the sum of its proper divisors (30803456).

61606906 is a wasteful number, since it uses less digits than its factorization.

61606906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30803455.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 61606906 is about 7849.0066887473. The cubic root of 61606906 is about 394.9509227067.

The spelling of 61606906 in words is "sixty-one million, six hundred six thousand, nine hundred six".