661332342 has 16 divisors (see below), whose sum is σ = 1442907072. Its totient is φ = 200403720.

The previous prime is 661332313. The next prime is 661332361. The reversal of 661332342 is 243233166.

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, 5010028 + ... + 5010159.

It is an arithmetic number, because the mean of its divisors is an integer number (90181692).

Almost surely, 2^661332342 is an apocalyptic number.

661332342 is an abundant number, since it is smaller than the sum of its proper divisors (781574730).

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

661332342 is a wasteful number, since it uses less digits than its factorization.

661332342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10020203.

The product of its digits is 15552, while the sum is 30.

The square root of 661332342 is about 25716.3827549677. The cubic root of 661332342 is about 871.2442416152.

The spelling of 661332342 in words is "six hundred sixty-one million, three hundred thirty-two thousand, three hundred forty-two".