652214640 has 320 divisors, whose sum is σ = 2609832960. Its totient is φ = 130744320.

The previous prime is 652214621. The next prime is 652214677. The reversal of 652214640 is 46412256.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 652214598 and 652214607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 535312 + ... + 536528.

It is an arithmetic number, because the mean of its divisors is an integer number (8155728).

Almost surely, 2^652214640 is an apocalyptic number.

652214640 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 652214640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1304916480).

652214640 is an abundant number, since it is smaller than the sum of its proper divisors (1957618320).

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

652214640 is a wasteful number, since it uses less digits than its factorization.

652214640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1280 (or 1274 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 652214640 is about 25538.4932993315. The cubic root of 652214640 is about 867.2217889956.

Adding to 652214640 its reverse (46412256), we get a palindrome (698626896).

The spelling of 652214640 in words is "six hundred fifty-two million, two hundred fourteen thousand, six hundred forty".