651464 has 24 divisors (see below), whose sum is σ = 1344630. Its totient is φ = 295680.

The previous prime is 651461. The next prime is 651473. The reversal of 651464 is 464156.

651464 = T₇₅ + T₇₆ + ... + T₁₆₂.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 592900 + 58564 = 770^2 + 242^2 .

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

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 651464.

It is not an unprimeable number, because it can be changed into a prime (651461) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 632 + ... + 1304.

2⁶⁵¹⁴⁶⁴ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 651464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (672315).

651464 is an abundant number, since it is smaller than the sum of its proper divisors (693166).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

651464 is a wasteful number, since it uses less digits than its factorization.

651464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701 (or 686 counting only the distinct ones).

The product of its digits is 2880, while the sum is 26.

The square root of 651464 is about 807.1331984251. The cubic root of 651464 is about 86.6888963358.

The spelling of 651464 in words is "six hundred fifty-one thousand, four hundred sixty-four".