651480 has 64 divisors (see below), whose sum is σ = 2008800. Its totient is φ = 168960.

The previous prime is 651473. The next prime is 651481. The reversal of 651480 is 84156.

651480 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 651480.

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 651480.

It is not an unprimeable number, because it can be changed into a prime (651481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7276 + ... + 7364.

2⁶⁵¹⁴⁸⁰ is an apocalyptic number.

651480 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 651480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1004400).

651480 is an abundant number, since it is smaller than the sum of its proper divisors (1357320).

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

651480 is a wasteful number, since it uses less digits than its factorization.

651480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164 (or 160 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 651480 is about 807.1431099873. The cubic root of 651480 is about 86.6896060251.

The spelling of 651480 in words is "six hundred fifty-one thousand, four hundred eighty".