190668616 has 32 divisors (see below), whose sum is σ = 363187800. Its totient is φ = 93829120.

The previous prime is 190668601. The next prime is 190668619. The reversal of 190668616 is 616866091.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 145106116 + 45562500 = 12046^2 + 6750^2 .

It is a super-2 number, since 2×190668616² = 72709042254710912, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (190668619) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 199596 + ... + 200548.

Almost surely, 2^190668616 is an apocalyptic number.

It is an amenable number.

190668616 is a deficient number, since it is larger than the sum of its proper divisors (172519184).

190668616 is a wasteful number, since it uses less digits than its factorization.

190668616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1329 (or 1325 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 190668616 is about 13808.2807039834. The cubic root of 190668616 is about 575.5632700945.

It can be divided in two parts, 1906 and 68616, that multiplied together give a square (130782096 = 11436²).

The spelling of 190668616 in words is "one hundred ninety million, six hundred sixty-eight thousand, six hundred sixteen".