993006641 has 4 divisors (see below), whose sum is σ = 1083279984. Its totient is φ = 902733300.

The previous prime is 993006613. The next prime is 993006659. The reversal of 993006641 is 146600399.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 993006641 - 2¹⁸ = 992744497 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 993006595 and 993006604.

It is not an unprimeable number, because it can be changed into a prime (993006691) 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, 45136655 + ... + 45136676.

It is an arithmetic number, because the mean of its divisors is an integer number (270819996).

Almost surely, 2^993006641 is an apocalyptic number.

It is an amenable number.

993006641 is a deficient number, since it is larger than the sum of its proper divisors (90273343).

993006641 is a wasteful number, since it uses less digits than its factorization.

993006641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90273342.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 993006641 is about 31512.0078858838. The cubic root of 993006641 is about 997.6634250029.

The spelling of 993006641 in words is "nine hundred ninety-three million, six thousand, six hundred forty-one".