61663190 has 16 divisors (see below), whose sum is σ = 112332528. Its totient is φ = 24367776.

The previous prime is 61663187. The next prime is 61663211. The reversal of 61663190 is 9136616.

It is a super-2 number, since 2×61663190² = 7604698001952200, which contains 22 as substring.

It is a congruent number.

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, 36317 + ... + 37976.

It is an arithmetic number, because the mean of its divisors is an integer number (7020783).

Almost surely, 2^61663190 is an apocalyptic number.

61663190 is a deficient number, since it is larger than the sum of its proper divisors (50669338).

61663190 is a wasteful number, since it uses less digits than its factorization.

61663190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74383.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 61663190 is about 7852.5912920513. The cubic root of 61663190 is about 395.0711616703.

The spelling of 61663190 in words is "sixty-one million, six hundred sixty-three thousand, one hundred ninety".