662861361 has 4 divisors (see below), whose sum is σ = 883815152. Its totient is φ = 441907572.

The previous prime is 662861359. The next prime is 662861411. The reversal of 662861361 is 163168266.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 662861361 - 2¹ = 662861359 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (662860361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110476891 + ... + 110476896.

It is an arithmetic number, because the mean of its divisors is an integer number (220953788).

Almost surely, 2^662861361 is an apocalyptic number.

It is an amenable number.

662861361 is a deficient number, since it is larger than the sum of its proper divisors (220953791).

662861361 is a wasteful number, since it uses less digits than its factorization.

662861361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220953790.

The product of its digits is 62208, while the sum is 39.

The square root of 662861361 is about 25746.0940921142. The cubic root of 662861361 is about 871.9151718852.

The spelling of 662861361 in words is "six hundred sixty-two million, eight hundred sixty-one thousand, three hundred sixty-one".