108462821 has 4 divisors (see below), whose sum is σ = 108553452. Its totient is φ = 108372192.

The previous prime is 108462817. The next prime is 108462841. The reversal of 108462821 is 128264801.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 63760225 + 44702596 = 7985^2 + 6686^2 .

It is a cyclic number.

It is not a de Polignac number, because 108462821 - 2² = 108462817 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108462841) 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, 43496 + ... + 45921.

It is an arithmetic number, because the mean of its divisors is an integer number (27138363).

Almost surely, 2^108462821 is an apocalyptic number.

It is an amenable number.

108462821 is a deficient number, since it is larger than the sum of its proper divisors (90631).

108462821 is an equidigital number, since it uses as much as digits as its factorization.

108462821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90630.

The product of its (nonzero) digits is 6144, while the sum is 32.

The square root of 108462821 is about 10414.5485259804. The cubic root of 108462821 is about 476.8996077841.

The spelling of 108462821 in words is "one hundred eight million, four hundred sixty-two thousand, eight hundred twenty-one".