650622993 has 4 divisors (see below), whose sum is σ = 867497328. Its totient is φ = 433748660.

The previous prime is 650622991. The next prime is 650623003. The reversal of 650622993 is 399226056.

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 650622993 - 2¹ = 650622991 is a prime.

It is not an unprimeable number, because it can be changed into a prime (650622991) 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, 108437163 + ... + 108437168.

It is an arithmetic number, because the mean of its divisors is an integer number (216874332).

Almost surely, 2^650622993 is an apocalyptic number.

It is an amenable number.

650622993 is a deficient number, since it is larger than the sum of its proper divisors (216874335).

650622993 is a wasteful number, since it uses less digits than its factorization.

650622993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216874334.

The product of its (nonzero) digits is 174960, while the sum is 42.

The square root of 650622993 is about 25507.3125397404. The cubic root of 650622993 is about 866.5157661501.

The spelling of 650622993 in words is "six hundred fifty million, six hundred twenty-two thousand, nine hundred ninety-three".