906900621 has 8 divisors (see below), whose sum is σ = 1319128224. Its totient is φ = 549636720.

The previous prime is 906900619. The next prime is 906900641. The reversal of 906900621 is 126009609.

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 906900621 - 2¹ = 906900619 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: 27481837 = 906900621 / (9 + 0 + 6 + 9 + 0 + 0 + 6 + 2 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (906900641) 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, 13740886 + ... + 13740951.

It is an arithmetic number, because the mean of its divisors is an integer number (164891028).

Almost surely, 2^906900621 is an apocalyptic number.

It is an amenable number.

906900621 is a deficient number, since it is larger than the sum of its proper divisors (412227603).

906900621 is a wasteful number, since it uses less digits than its factorization.

906900621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27481851.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 906900621 is about 30114.7907347868. The cubic root of 906900621 is about 967.9506885411.

The spelling of 906900621 in words is "nine hundred six million, nine hundred thousand, six hundred twenty-one".