651367 has 4 divisors (see below), whose sum is σ = 667296. Its totient is φ = 635440.

The previous prime is 651361. The next prime is 651397. The reversal of 651367 is 763156.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 651367 - 2⁷ = 651239 is a prime.

It is a Duffinian number.

651367 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (651361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7903 + ... + 7984.

It is an arithmetic number, because the mean of its divisors is an integer number (166824).

2⁶⁵¹³⁶⁷ is an apocalyptic number.

651367 is a deficient number, since it is larger than the sum of its proper divisors (15929).

651367 is a wasteful number, since it uses less digits than its factorization.

651367 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15928.

The product of its digits is 3780, while the sum is 28.

The square root of 651367 is about 807.0731069736. The cubic root of 651367 is about 86.6845935960.

The spelling of 651367 in words is "six hundred fifty-one thousand, three hundred sixty-seven".