906699643 has 4 divisors (see below), whose sum is σ = 916047160. Its totient is φ = 897352128.

The previous prime is 906699631. The next prime is 906699667. The reversal of 906699643 is 346996609.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 906699643 - 2⁵ = 906699611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (906699943) 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, 4673613 + ... + 4673806.

It is an arithmetic number, because the mean of its divisors is an integer number (229011790).

Almost surely, 2^906699643 is an apocalyptic number.

906699643 is a deficient number, since it is larger than the sum of its proper divisors (9347517).

906699643 is an equidigital number, since it uses as much as digits as its factorization.

906699643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9347516.

The product of its (nonzero) digits is 1889568, while the sum is 52.

The square root of 906699643 is about 30111.4536846031. The cubic root of 906699643 is about 967.8791808290.

The spelling of 906699643 in words is "nine hundred six million, six hundred ninety-nine thousand, six hundred forty-three".