691141742 has 8 divisors (see below), whose sum is σ = 1046778096. Its totient is φ = 342215712.

The previous prime is 691141741. The next prime is 691141799. The reversal of 691141742 is 247141196.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (691141741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1677323 + ... + 1677734.

It is an arithmetic number, because the mean of its divisors is an integer number (130847262).

Almost surely, 2^691141742 is an apocalyptic number.

691141742 is a deficient number, since it is larger than the sum of its proper divisors (355636354).

691141742 is a wasteful number, since it uses less digits than its factorization.

691141742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3355162.

The product of its digits is 12096, while the sum is 35.

The square root of 691141742 is about 26289.5747778468. The cubic root of 691141742 is about 884.1427181995.

The spelling of 691141742 in words is "six hundred ninety-one million, one hundred forty-one thousand, seven hundred forty-two".