19950668 has 6 divisors (see below), whose sum is σ = 34913676. Its totient is φ = 9975332.

The previous prime is 19950661. The next prime is 19950691. The reversal of 19950668 is 86605991.

It is not an unprimeable number, because it can be changed into a prime (19950661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2493830 + ... + 2493837.

It is an arithmetic number, because the mean of its divisors is an integer number (5818946).

Almost surely, 2^19950668 is an apocalyptic number.

It is an amenable number.

19950668 is a deficient number, since it is larger than the sum of its proper divisors (14963008).

19950668 is a wasteful number, since it uses less digits than its factorization.

19950668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4987671 (or 4987669 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 44.

The square root of 19950668 is about 4466.6170644012. The cubic root of 19950668 is about 271.2183984931.

The spelling of 19950668 in words is "nineteen million, nine hundred fifty thousand, six hundred sixty-eight".