401650647 has 8 divisors (see below), whose sum is σ = 539387520. Its totient is φ = 265840440.

The previous prime is 401650643. The next prime is 401650649. The reversal of 401650647 is 746056104.

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

It is not a de Polignac number, because 401650647 - 2² = 401650643 is a prime.

It is a super-2 number, since 2×401650647² = 322646484471037218, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401650643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 481179 + ... + 482012.

It is an arithmetic number, because the mean of its divisors is an integer number (67423440).

Almost surely, 2^401650647 is an apocalyptic number.

401650647 is a deficient number, since it is larger than the sum of its proper divisors (137736873).

401650647 is a wasteful number, since it uses less digits than its factorization.

401650647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 963333.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 401650647 is about 20041.2236901842. The cubic root of 401650647 is about 737.8184147218.

The spelling of 401650647 in words is "four hundred one million, six hundred fifty thousand, six hundred forty-seven".