691828053 has 16 divisors (see below), whose sum is σ = 1054584960. Its totient is φ = 395191296.

The previous prime is 691828021. The next prime is 691828069. The reversal of 691828053 is 350828196.

It is not a de Polignac number, because 691828053 - 2⁵ = 691828021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 691827996 and 691828014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (691828003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101901 + ... + 108477.

It is an arithmetic number, because the mean of its divisors is an integer number (65911560).

Almost surely, 2^691828053 is an apocalyptic number.

It is an amenable number.

691828053 is a deficient number, since it is larger than the sum of its proper divisors (362756907).

691828053 is a wasteful number, since it uses less digits than its factorization.

691828053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11596.

The product of its (nonzero) digits is 103680, while the sum is 42.

The square root of 691828053 is about 26302.6244508034. The cubic root of 691828053 is about 884.4352757146.

The spelling of 691828053 in words is "six hundred ninety-one million, eight hundred twenty-eight thousand, fifty-three".