661422315 has 32 divisors (see below), whose sum is σ = 1122356736. Its totient is φ = 331466240.

The previous prime is 661422301. The next prime is 661422341. The reversal of 661422315 is 513224166.

661422315 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 661422315 - 2⁴ = 661422299 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 187720 + ... + 191210.

It is an arithmetic number, because the mean of its divisors is an integer number (35073648).

Almost surely, 2^661422315 is an apocalyptic number.

661422315 is a deficient number, since it is larger than the sum of its proper divisors (460934421).

661422315 is a wasteful number, since it uses less digits than its factorization.

661422315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4259.

The product of its digits is 8640, while the sum is 30.

The square root of 661422315 is about 25718.1320278126. The cubic root of 661422315 is about 871.2837501944.

The spelling of 661422315 in words is "six hundred sixty-one million, four hundred twenty-two thousand, three hundred fifteen".