401655770 has 16 divisors (see below), whose sum is σ = 765508968. Its totient is φ = 151211520.

The previous prime is 401655743. The next prime is 401655797. The reversal of 401655770 is 77556104.

401655770 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (401655743) and next prime (401655797).

It can be written as a sum of positive squares in 4 ways, for example, as 307546369 + 94109401 = 17537^2 + 9701^2 .

It is a super-2 number, since 2×401655770² = 322654715148585800, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 401655770.

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, 1181171 + ... + 1181510.

Almost surely, 2^401655770 is an apocalyptic number.

401655770 is a deficient number, since it is larger than the sum of its proper divisors (363853198).

401655770 is a wasteful number, since it uses less digits than its factorization.

401655770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2362705.

The product of its (nonzero) digits is 29400, while the sum is 35.

The square root of 401655770 is about 20041.3515013334. The cubic root of 401655770 is about 737.8215516334.

The spelling of 401655770 in words is "four hundred one million, six hundred fifty-five thousand, seven hundred seventy".