401660370 has 40 divisors (see below), whose sum is σ = 1080022284. Its totient is φ = 107109216.

The previous prime is 401660351. The next prime is 401660401. The reversal of 401660370 is 73066104.

401660370 is a `hidden beast` number, since 40 + 16 + 603 + 7 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 398122209 + 3538161 = 19953^2 + 1881^2 .

It is a super-2 number, since 2×401660370² = 322662105657073800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 247129 + ... + 248748.

Almost surely, 2^401660370 is an apocalyptic number.

401660370 is an abundant number, since it is smaller than the sum of its proper divisors (678361914).

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

401660370 is a wasteful number, since it uses less digits than its factorization.

401660370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495896 (or 495887 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 401660370 is about 20041.4662637243. The cubic root of 401660370 is about 737.8243682793.

The spelling of 401660370 in words is "four hundred one million, six hundred sixty thousand, three hundred seventy".