20954613 has 8 divisors (see below), whose sum is σ = 27961408. Its totient is φ = 13958784.

The previous prime is 20954581. The next prime is 20954627. The reversal of 20954613 is 31645902.

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

It is not a de Polignac number, because 20954613 - 2⁵ = 20954581 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 (20954653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4320 + ... + 7782.

It is an arithmetic number, because the mean of its divisors is an integer number (3495176).

Almost surely, 2^20954613 is an apocalyptic number.

It is an amenable number.

20954613 is a deficient number, since it is larger than the sum of its proper divisors (7006795).

20954613 is a wasteful number, since it uses less digits than its factorization.

20954613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5483.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 20954613 is about 4577.6208886276. The cubic root of 20954613 is about 275.6935134927.

The spelling of 20954613 in words is "twenty million, nine hundred fifty-four thousand, six hundred thirteen".