651115 has 4 divisors (see below), whose sum is σ = 781344. Its totient is φ = 520888.

The previous prime is 651109. The next prime is 651127. The reversal of 651115 is 511156.

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 651115 - 2⁷ = 650987 is a prime.

It is a Duffinian number.

651115 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 651092 and 651101.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65107 + ... + 65116.

It is an arithmetic number, because the mean of its divisors is an integer number (195336).

2⁶⁵¹¹¹⁵ is an apocalyptic number.

651115 is a deficient number, since it is larger than the sum of its proper divisors (130229).

651115 is a wasteful number, since it uses less digits than its factorization.

651115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130228.

The product of its digits is 150, while the sum is 19.

The square root of 651115 is about 806.9169721849. The cubic root of 651115 is about 86.6734133472.

The spelling of 651115 in words is "six hundred fifty-one thousand, one hundred fifteen".