651472 has 20 divisors (see below), whose sum is σ = 1329280.
Its totient is φ = 308448.
The previous prime is 651461. The next prime is 651473. The reversal of 651472 is 274156.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (651473) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 768 + ... + 1375.
It is an arithmetic number, because the mean of its divisors is an integer number (66464).
2651472 is an apocalyptic number.
It is an amenable number.
651472 is an abundant number, since it is smaller than the sum of its proper divisors (677808).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
651472 is a wasteful number, since it uses less digits than its factorization.
651472 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2170 (or 2164 counting only the distinct ones).
The product of its digits is 1680, while the sum is 25.
The square root of 651472 is about 807.1381542214.
The cubic root of 651472 is about 86.6892511819.
The spelling of 651472 in words is "six hundred fifty-one thousand, four hundred seventy-two".