61606403 has 4 divisors (see below), whose sum is σ = 61635000. Its totient is φ = 61577808.

The previous prime is 61606399. The next prime is 61606409. The reversal of 61606403 is 30460616.

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

It is a cyclic number.

It is not a de Polignac number, because 61606403 - 2² = 61606399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61606409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10778 + ... + 15471.

It is an arithmetic number, because the mean of its divisors is an integer number (15408750).

Almost surely, 2^61606403 is an apocalyptic number.

61606403 is a deficient number, since it is larger than the sum of its proper divisors (28597).

61606403 is a wasteful number, since it uses less digits than its factorization.

61606403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28596.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 61606403 is about 7848.9746464108. The cubic root of 61606403 is about 394.9498478226.

The spelling of 61606403 in words is "sixty-one million, six hundred six thousand, four hundred three".