401770 has 8 divisors (see below), whose sum is σ = 723204. Its totient is φ = 160704.

The previous prime is 401743. The next prime is 401771. The reversal of 401770 is 77104.

It can be written as a sum of positive squares in 2 ways, for example, as 385641 + 16129 = 621^2 + 127^2 .

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

It is a super-2 number, since 2×401770² = 322838265800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (401771) by changing a digit.

401770 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20079 + ... + 20098.

2⁴⁰¹⁷⁷⁰ is an apocalyptic number.

401770 is a deficient number, since it is larger than the sum of its proper divisors (321434).

401770 is a wasteful number, since it uses less digits than its factorization.

401770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40184.

The product of its (nonzero) digits is 196, while the sum is 19.

The square root of 401770 is about 633.8532953294. The cubic root of 401770 is about 73.7891489935.

Adding to 401770 its reverse (77104), we get a palindrome (478874).

The spelling of 401770 in words is "four hundred one thousand, seven hundred seventy", and thus it is an iban number.