661462953 has 8 divisors (see below), whose sum is σ = 882069600. Its totient is φ = 440915808.

The previous prime is 661462933. The next prime is 661462999. The reversal of 661462953 is 359264166.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 661462953 - 2⁶ = 661462889 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (661462933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34158 + ... + 49896.

It is an arithmetic number, because the mean of its divisors is an integer number (110258700).

Almost surely, 2^661462953 is an apocalyptic number.

It is an amenable number.

661462953 is a deficient number, since it is larger than the sum of its proper divisors (220606647).

661462953 is a wasteful number, since it uses less digits than its factorization.

661462953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29751.

The product of its digits is 233280, while the sum is 42.

The square root of 661462953 is about 25718.9220808338. The cubic root of 661462953 is about 871.3015938137.

The spelling of 661462953 in words is "six hundred sixty-one million, four hundred sixty-two thousand, nine hundred fifty-three".