650938957 has 4 divisors (see below), whose sum is σ = 651533436. Its totient is φ = 650344480.

The previous prime is 650938949. The next prime is 650938987. The reversal of 650938957 is 759839056.

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

It can be written as a sum of positive squares in 2 ways, for example, as 59768361 + 591170596 = 7731^2 + 24314^2 .

It is a cyclic number.

It is not a de Polignac number, because 650938957 - 2³ = 650938949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (650938927) 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, 295594 + ... + 297787.

It is an arithmetic number, because the mean of its divisors is an integer number (162883359).

Almost surely, 2^650938957 is an apocalyptic number.

It is an amenable number.

650938957 is a deficient number, since it is larger than the sum of its proper divisors (594479).

650938957 is a wasteful number, since it uses less digits than its factorization.

650938957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594478.

The product of its (nonzero) digits is 2041200, while the sum is 52.

The square root of 650938957 is about 25513.5053844038. The cubic root of 650938957 is about 866.6560130018.

The spelling of 650938957 in words is "six hundred fifty million, nine hundred thirty-eight thousand, nine hundred fifty-seven".