624397 has 8 divisors (see below), whose sum is σ = 669600. Its totient is φ = 580464.

The previous prime is 624391. The next prime is 624401. The reversal of 624397 is 793426.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 624397 - 2¹⁹ = 100109 is a prime.

It is a super-2 number, since 2×624397² = 779743227218, which contains 22 as substring.

It is a d-powerful number, because it can be written as 6³ + 2¹³ + 3¹¹ + 4⁹ + 9⁵ + 7⁶ .

It is a Duffinian number.

624397 is a lucky number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (624391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 843 + ... + 1399.

It is an arithmetic number, because the mean of its divisors is an integer number (83700).

2⁶²⁴³⁹⁷ is an apocalyptic number.

It is an amenable number.

624397 is a deficient number, since it is larger than the sum of its proper divisors (45203).

624397 is a wasteful number, since it uses less digits than its factorization.

624397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635.

The product of its digits is 9072, while the sum is 31.

The square root of 624397 is about 790.1879523253. The cubic root of 624397 is about 85.4712920730.

The spelling of 624397 in words is "six hundred twenty-four thousand, three hundred ninety-seven".