61607817 has 8 divisors (see below), whose sum is σ = 91270880. Its totient is φ = 41071860.

The previous prime is 61607801. The next prime is 61607851. The reversal of 61607817 is 71870616.

It is a happy number.

61607817 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61607817 - 2⁴ = 61607801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61607867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1140859 + ... + 1140912.

It is an arithmetic number, because the mean of its divisors is an integer number (11408860).

Almost surely, 2^61607817 is an apocalyptic number.

It is an amenable number.

61607817 is a deficient number, since it is larger than the sum of its proper divisors (29663063).

61607817 is a wasteful number, since it uses less digits than its factorization.

61607817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2281780 (or 2281774 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 61607817 is about 7849.0647213537. The cubic root of 61607817 is about 394.9528694501.

The spelling of 61607817 in words is "sixty-one million, six hundred seven thousand, eight hundred seventeen".