6340921634 has 4 divisors (see below), whose sum is σ = 9511382454. Its totient is φ = 3170460816.

The previous prime is 6340921627. The next prime is 6340921723. The reversal of 6340921634 is 4361290436.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 4440223225 + 1900698409 = 66635^2 + 43597^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1585230407 + ... + 1585230410.

Almost surely, 2^6340921634 is an apocalyptic number.

6340921634 is a deficient number, since it is larger than the sum of its proper divisors (3170460820).

6340921634 is a wasteful number, since it uses less digits than its factorization.

6340921634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3170460819.

The product of its (nonzero) digits is 93312, while the sum is 38.

The square root of 6340921634 is about 79629.9041441091. The cubic root of 6340921634 is about 1850.9050000165.

The spelling of 6340921634 in words is "six billion, three hundred forty million, nine hundred twenty-one thousand, six hundred thirty-four".