651422406 has 32 divisors (see below), whose sum is σ = 1348881408. Its totient is φ = 209509920.

The previous prime is 651422381. The next prime is 651422413. The reversal of 651422406 is 604224156.

It is a Curzon number.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 59496 + ... + 69588.

It is an arithmetic number, because the mean of its divisors is an integer number (42152544).

Almost surely, 2^651422406 is an apocalyptic number.

651422406 is an abundant number, since it is smaller than the sum of its proper divisors (697459002).

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

651422406 is a wasteful number, since it uses less digits than its factorization.

651422406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10476.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 651422406 is about 25522.9780002256. The cubic root of 651422406 is about 866.8705135554.

It can be divided in two parts, 6514 and 22406, that added together give a triangular number (28920 = T₂₄₀).

The spelling of 651422406 in words is "six hundred fifty-one million, four hundred twenty-two thousand, four hundred six".