662420161 has 8 divisors (see below), whose sum is σ = 750921920. Its totient is φ = 579282192.

The previous prime is 662420153. The next prime is 662420173. The reversal of 662420161 is 161024266.

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

It is a cyclic number.

It is not a de Polignac number, because 662420161 - 2³ = 662420153 is a prime.

It is a super-3 number, since 3×662420161³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (662429161) 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, 1340685 + ... + 1341178.

It is an arithmetic number, because the mean of its divisors is an integer number (93865240).

Almost surely, 2^662420161 is an apocalyptic number.

It is an amenable number.

662420161 is a deficient number, since it is larger than the sum of its proper divisors (88501759).

662420161 is a wasteful number, since it uses less digits than its factorization.

662420161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2681895.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 662420161 is about 25737.5243758991. The cubic root of 662420161 is about 871.7216802656.

The spelling of 662420161 in words is "six hundred sixty-two million, four hundred twenty thousand, one hundred sixty-one".