624491340 has 96 divisors (see below), whose sum is σ = 1914264576. Its totient is φ = 150858240.

The previous prime is 624491339. The next prime is 624491401. The reversal of 624491340 is 43194426.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 205069 + ... + 208091.

It is an arithmetic number, because the mean of its divisors is an integer number (19940256).

Almost surely, 2^624491340 is an apocalyptic number.

624491340 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 624491340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (957132288).

624491340 is an abundant number, since it is smaller than the sum of its proper divisors (1289773236).

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

624491340 is a wasteful number, since it uses less digits than its factorization.

624491340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3359 (or 3357 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 624491340 is about 24989.8247292773. The cubic root of 624491340 is about 854.7559646891.

The spelling of 624491340 in words is "six hundred twenty-four million, four hundred ninety-one thousand, three hundred forty".