35668821 has 4 divisors (see below), whose sum is σ = 47558432. Its totient is φ = 23779212.

The previous prime is 35668813. The next prime is 35668859. The reversal of 35668821 is 12886653.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 35668821 - 2³ = 35668813 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 35668821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (35668921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5944801 + ... + 5944806.

It is an arithmetic number, because the mean of its divisors is an integer number (11889608).

Almost surely, 2^35668821 is an apocalyptic number.

It is an amenable number.

35668821 is a deficient number, since it is larger than the sum of its proper divisors (11889611).

35668821 is a wasteful number, since it uses less digits than its factorization.

35668821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11889610.

The product of its digits is 69120, while the sum is 39.

The square root of 35668821 is about 5972.3379844078. The cubic root of 35668821 is about 329.1770772189.

The spelling of 35668821 in words is "thirty-five million, six hundred sixty-eight thousand, eight hundred twenty-one".