61708870 has 16 divisors (see below), whose sum is σ = 113659920. Its totient is φ = 24109344.

The previous prime is 61708847. The next prime is 61708891. The reversal of 61708870 is 7880716.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71325 + ... + 72184.

It is an arithmetic number, because the mean of its divisors is an integer number (7103745).

Almost surely, 2^61708870 is an apocalyptic number.

61708870 is a deficient number, since it is larger than the sum of its proper divisors (51951050).

61708870 is a wasteful number, since it uses less digits than its factorization.

61708870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143559.

The product of its (nonzero) digits is 18816, while the sum is 37.

The square root of 61708870 is about 7855.4993475908. The cubic root of 61708870 is about 395.1686936346.

The spelling of 61708870 in words is "sixty-one million, seven hundred eight thousand, eight hundred seventy".