428621690633 has 8 divisors (see below), whose sum is σ = 437791116288. Its totient is φ = 419454340704.

The previous prime is 428621690597. The next prime is 428621690641. The reversal of 428621690633 is 336096126824.

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

It is a cyclic number.

It is not a de Polignac number, because 428621690633 - 2¹⁴ = 428621674249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (428621690533) 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, 97916 + ... + 931037.

It is an arithmetic number, because the mean of its divisors is an integer number (54723889536).

Almost surely, 2^428621690633 is an apocalyptic number.

It is an amenable number.

428621690633 is a deficient number, since it is larger than the sum of its proper divisors (9169425655).

428621690633 is a wasteful number, since it uses less digits than its factorization.

428621690633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1037863.

The product of its (nonzero) digits is 2239488, while the sum is 50.

The spelling of 428621690633 in words is "four hundred twenty-eight billion, six hundred twenty-one million, six hundred ninety thousand, six hundred thirty-three".