661134462 has 16 divisors (see below), whose sum is σ = 1323561360. Its totient is φ = 220162752.

The previous prime is 661134449. The next prime is 661134479. The reversal of 661134462 is 264431166.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47137 + ... + 59532.

It is an arithmetic number, because the mean of its divisors is an integer number (82722585).

Almost surely, 2^661134462 is an apocalyptic number.

661134462 is an abundant number, since it is smaller than the sum of its proper divisors (662426898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

661134462 is a wasteful number, since it uses less digits than its factorization.

661134462 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107707.

The product of its digits is 20736, while the sum is 33.

The square root of 661134462 is about 25712.5351142201. The cubic root of 661134462 is about 871.1573367428.

The spelling of 661134462 in words is "six hundred sixty-one million, one hundred thirty-four thousand, four hundred sixty-two".