651061 has 4 divisors (see below), whose sum is σ = 679392. Its totient is φ = 622732.

The previous prime is 651043. The next prime is 651067. The reversal of 651061 is 160156.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 651061 - 2⁵ = 651029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (651067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14131 + ... + 14176.

It is an arithmetic number, because the mean of its divisors is an integer number (169848).

2⁶⁵¹⁰⁶¹ is an apocalyptic number.

It is an amenable number.

651061 is a deficient number, since it is larger than the sum of its proper divisors (28331).

651061 is a wasteful number, since it uses less digits than its factorization.

651061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28330.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 651061 is about 806.8835107994. The cubic root of 651061 is about 86.6710172044.

The spelling of 651061 in words is "six hundred fifty-one thousand, sixty-one".