691700058 has 24 divisors (see below), whose sum is σ = 1712781408. Its totient is φ = 197628552.

The previous prime is 691700057. The next prime is 691700069. The reversal of 691700058 is 850007196.

It is a junction number, because it is equal to n+sod(n) for n = 691699995 and 691700031.

It is not an unprimeable number, because it can be changed into a prime (691700057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2744716 + ... + 2744967.

It is an arithmetic number, because the mean of its divisors is an integer number (71365892).

Almost surely, 2^691700058 is an apocalyptic number.

691700058 is an abundant number, since it is smaller than the sum of its proper divisors (1021081350).

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

691700058 is a wasteful number, since it uses less digits than its factorization.

691700058 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5489698 (or 5489695 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 691700058 is about 26300.1912160349. The cubic root of 691700058 is about 884.3807292732.

The spelling of 691700058 in words is "six hundred ninety-one million, seven hundred thousand, fifty-eight".