690947876 has 24 divisors (see below), whose sum is σ = 1268809920. Its totient is φ = 328599392.

The previous prime is 690947869. The next prime is 690947891. The reversal of 690947876 is 678749096.

It is a super-2 number, since 2×690947876² = 954817934697822752, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4511 + ... + 37446.

It is an arithmetic number, because the mean of its divisors is an integer number (52867080).

Almost surely, 2^690947876 is an apocalyptic number.

It is an amenable number.

690947876 is a deficient number, since it is larger than the sum of its proper divisors (577862044).

690947876 is a wasteful number, since it uses less digits than its factorization.

690947876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42163 (or 42161 counting only the distinct ones).

The product of its (nonzero) digits is 4572288, while the sum is 56.

The square root of 690947876 is about 26285.8873922871. The cubic root of 690947876 is about 884.0600428085.

The spelling of 690947876 in words is "six hundred ninety million, nine hundred forty-seven thousand, eight hundred seventy-six".