61659995 has 8 divisors (see below), whose sum is σ = 74725200. Its totient is φ = 48839200.

The previous prime is 61659989. The next prime is 61660007. The reversal of 61659995 is 59995616.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61659995 - 2⁶ = 61659931 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60545 + ... + 61554.

It is an arithmetic number, because the mean of its divisors is an integer number (9340650).

Almost surely, 2^61659995 is an apocalyptic number.

61659995 is a deficient number, since it is larger than the sum of its proper divisors (13065205).

61659995 is a wasteful number, since it uses less digits than its factorization.

61659995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122205.

The product of its digits is 656100, while the sum is 50.

The square root of 61659995 is about 7852.3878533857. The cubic root of 61659995 is about 395.0643381820.

The spelling of 61659995 in words is "sixty-one million, six hundred fifty-nine thousand, nine hundred ninety-five".