696399129 has 24 divisors (see below), whose sum is σ = 1055500992. Its totient is φ = 441603360.

The previous prime is 696399059. The next prime is 696399131. The reversal of 696399129 is 921993696.

It is not a de Polignac number, because 696399129 - 2⁹ = 696398617 is a prime.

It is a super-3 number, since 3×696399129³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (696399199) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28174 + ... + 46760.

It is an arithmetic number, because the mean of its divisors is an integer number (43979208).

Almost surely, 2^696399129 is an apocalyptic number.

696399129 is a gapful number since it is divisible by the number (69) formed by its first and last digit.

It is an amenable number.

696399129 is a deficient number, since it is larger than the sum of its proper divisors (359101863).

696399129 is a wasteful number, since it uses less digits than its factorization.

696399129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18797 (or 18794 counting only the distinct ones).

The product of its digits is 1417176, while the sum is 54.

The square root of 696399129 is about 26389.3753052246. The cubic root of 696399129 is about 886.3788942283.

The spelling of 696399129 in words is "six hundred ninety-six million, three hundred ninety-nine thousand, one hundred twenty-nine".