35680821 has 8 divisors (see below), whose sum is σ = 51899424. Its totient is φ = 21624720.

The previous prime is 35680811. The next prime is 35680829. The reversal of 35680821 is 12808653.

It is a happy number.

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

It is not a de Polignac number, because 35680821 - 2⁵ = 35680789 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 1081237 = 35680821 / (3 + 5 + 6 + 8 + 0 + 8 + 2 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (35680829) 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, 540586 + ... + 540651.

It is an arithmetic number, because the mean of its divisors is an integer number (6487428).

Almost surely, 2^35680821 is an apocalyptic number.

It is an amenable number.

35680821 is a deficient number, since it is larger than the sum of its proper divisors (16218603).

35680821 is a wasteful number, since it uses less digits than its factorization.

35680821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1081251.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 35680821 is about 5973.3425316149. The cubic root of 35680821 is about 329.2139879056.

The spelling of 35680821 in words is "thirty-five million, six hundred eighty thousand, eight hundred twenty-one".