820954 has 4 divisors (see below), whose sum is σ = 1231434. Its totient is φ = 410476.

The previous prime is 820927. The next prime is 820957. The reversal of 820954 is 459028.

It is a happy number.

820954 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 714025 + 106929 = 845^2 + 327^2 .

It is not an unprimeable number, because it can be changed into a prime (820957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 205237 + ... + 205240.

2⁸²⁰⁹⁵⁴ is an apocalyptic number.

820954 is a deficient number, since it is larger than the sum of its proper divisors (410480).

820954 is a wasteful number, since it uses less digits than its factorization.

820954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410479.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 820954 is about 906.0651190726. The cubic root of 820954 is about 93.6353003190.

The spelling of 820954 in words is "eight hundred twenty thousand, nine hundred fifty-four".