690909696 has 320 divisors, whose sum is σ = 2227357440. Its totient is φ = 210862080.

The previous prime is 690909677. The next prime is 690909697. The reversal of 690909696 is 696909096.

It is a Harshad number since it is a multiple of its sum of digits (54).

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

It is not an unprimeable number, because it can be changed into a prime (690909697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13036006 + ... + 13036058.

It is an arithmetic number, because the mean of its divisors is an integer number (6960492).

Almost surely, 2^690909696 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 690909696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1113678720).

690909696 is an abundant number, since it is smaller than the sum of its proper divisors (1536447744).

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

690909696 is a wasteful number, since it uses less digits than its factorization.

690909696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144 (or 122 counting only the distinct ones).

The product of its (nonzero) digits is 1417176, while the sum is 54.

The square root of 690909696 is about 26285.1611370370. The cubic root of 690909696 is about 884.0437588816.

The spelling of 690909696 in words is "six hundred ninety million, nine hundred nine thousand, six hundred ninety-six".