690838942 has 8 divisors (see below), whose sum is σ = 1040706576. Its totient is φ = 343936752.

The previous prime is 690838933. The next prime is 690838961. The reversal of 690838942 is 249838096.

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

It is a congruent number.

It is an unprimeable number.

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, 740778 + ... + 741709.

It is an arithmetic number, because the mean of its divisors is an integer number (130088322).

Almost surely, 2^690838942 is an apocalyptic number.

690838942 is a deficient number, since it is larger than the sum of its proper divisors (349867634).

690838942 is a wasteful number, since it uses less digits than its factorization.

690838942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1482722.

The product of its (nonzero) digits is 746496, while the sum is 49.

The square root of 690838942 is about 26283.8152101250. The cubic root of 690838942 is about 884.0135804238.

The spelling of 690838942 in words is "six hundred ninety million, eight hundred thirty-eight thousand, nine hundred forty-two".