19496661 has 8 divisors (see below), whose sum is σ = 26016480. Its totient is φ = 12987312.

The previous prime is 19496657. The next prime is 19496677. The reversal of 19496661 is 16669491.

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

It is not a de Polignac number, because 19496661 - 2² = 19496657 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19496761) 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, 4486 + ... + 7688.

It is an arithmetic number, because the mean of its divisors is an integer number (3252060).

Almost surely, 2^19496661 is an apocalyptic number.

It is an amenable number.

19496661 is a deficient number, since it is larger than the sum of its proper divisors (6519819).

19496661 is a wasteful number, since it uses less digits than its factorization.

19496661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5235.

The product of its digits is 69984, while the sum is 42.

The square root of 19496661 is about 4415.5023496766. The cubic root of 19496661 is about 269.1452668668.

The spelling of 19496661 in words is "nineteen million, four hundred ninety-six thousand, six hundred sixty-one".