401655626 has 16 divisors (see below), whose sum is σ = 628986600. Its totient is φ = 192120768.

The previous prime is 401655599. The next prime is 401655643. The reversal of 401655626 is 626556104.

It can be written as a sum of positive squares in 4 ways, for example, as 382163401 + 19492225 = 19549^2 + 4415^2 .

It is a super-2 number, since 2×401655626² = 322654483794903752, which contains 22 as substring.

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, 25445 + ... + 38088.

Almost surely, 2^401655626 is an apocalyptic number.

401655626 is a deficient number, since it is larger than the sum of its proper divisors (227330974).

401655626 is a wasteful number, since it uses less digits than its factorization.

401655626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63673.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 401655626 is about 20041.3479087610. The cubic root of 401655626 is about 737.8214634598.

The spelling of 401655626 in words is "four hundred one million, six hundred fifty-five thousand, six hundred twenty-six".