405597696 has 240 divisors, whose sum is σ = 1335088656. Its totient is φ = 108724224.

The previous prime is 405597649. The next prime is 405597739. The reversal of 405597696 is 696795504.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1279330 + ... + 1279646.

Almost surely, 2^405597696 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 405597696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (667544328).

405597696 is an abundant number, since it is smaller than the sum of its proper divisors (929490960).

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

405597696 is a wasteful number, since it uses less digits than its factorization.

405597696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369 (or 346 counting only the distinct ones).

The product of its (nonzero) digits is 2041200, while the sum is 51.

The square root of 405597696 is about 20139.4561992125. The cubic root of 405597696 is about 740.2274051529.

The spelling of 405597696 in words is "four hundred five million, five hundred ninety-seven thousand, six hundred ninety-six".