61451606 has 4 divisors (see below), whose sum is σ = 92177412. Its totient is φ = 30725802.

The previous prime is 61451573. The next prime is 61451629. The reversal of 61451606 is 60615416.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15362900 + ... + 15362903.

It is an arithmetic number, because the mean of its divisors is an integer number (23044353).

Almost surely, 2^61451606 is an apocalyptic number.

61451606 is a deficient number, since it is larger than the sum of its proper divisors (30725806).

61451606 is a wasteful number, since it uses less digits than its factorization.

61451606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30725805.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 61451606 is about 7839.1074747065. The cubic root of 61451606 is about 394.6187765589.

The spelling of 61451606 in words is "sixty-one million, four hundred fifty-one thousand, six hundred six".