696819049 has 4 divisors (see below), whose sum is σ = 700669060. Its totient is φ = 692969040.

The previous prime is 696819031. The next prime is 696819059. The reversal of 696819049 is 940918696.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 200420649 + 496398400 = 14157^2 + 22280^2 .

It is a cyclic number.

It is not a de Polignac number, because 696819049 - 2¹⁷ = 696687977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 696818987 and 696819005.

It is not an unprimeable number, because it can be changed into a prime (696819059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1924734 + ... + 1925095.

It is an arithmetic number, because the mean of its divisors is an integer number (175167265).

Almost surely, 2^696819049 is an apocalyptic number.

It is an amenable number.

696819049 is a deficient number, since it is larger than the sum of its proper divisors (3850011).

696819049 is a wasteful number, since it uses less digits than its factorization.

696819049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3850010.

The product of its (nonzero) digits is 839808, while the sum is 52.

The square root of 696819049 is about 26397.3303385020. The cubic root of 696819049 is about 886.5570169085.

The spelling of 696819049 in words is "six hundred ninety-six million, eight hundred nineteen thousand, forty-nine".