696129408 has 384 divisors, whose sum is σ = 2352430080. Its totient is φ = 195858432.

The previous prime is 696129407. The next prime is 696129419. The reversal of 696129408 is 804921696.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (384).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (696129407) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14811241 + ... + 14811287.

It is an arithmetic number, because the mean of its divisors is an integer number (6126120).

Almost surely, 2^696129408 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 696129408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1176215040).

696129408 is an abundant number, since it is smaller than the sum of its proper divisors (1656300672).

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

696129408 is a wasteful number, since it uses less digits than its factorization.

696129408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146 (or 131 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 696129408 is about 26384.2644013435. The cubic root of 696129408 is about 886.2644455529.

The spelling of 696129408 in words is "six hundred ninety-six million, one hundred twenty-nine thousand, four hundred eight".