651398 has 16 divisors (see below), whose sum is σ = 1103760. Its totient is φ = 285600.

The previous prime is 651397. The next prime is 651401. The reversal of 651398 is 893156.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 651398.

It is not an unprimeable number, because it can be changed into a prime (651397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128 + ... + 1148.

It is an arithmetic number, because the mean of its divisors is an integer number (68985).

2⁶⁵¹³⁹⁸ is an apocalyptic number.

651398 is a deficient number, since it is larger than the sum of its proper divisors (452362).

651398 is a wasteful number, since it uses less digits than its factorization.

651398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1063.

The product of its digits is 6480, while the sum is 32.

The square root of 651398 is about 807.0923119446. The cubic root of 651398 is about 86.6859687448.

The spelling of 651398 in words is "six hundred fifty-one thousand, three hundred ninety-eight".