690432102 has 48 divisors (see below), whose sum is σ = 1525331808. Its totient is φ = 225659520.

The previous prime is 690432079. The next prime is 690432103. The reversal of 690432102 is 201234096.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690432103) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 236383 + ... + 239285.

It is an arithmetic number, because the mean of its divisors is an integer number (31777746).

Almost surely, 2^690432102 is an apocalyptic number.

690432102 is an abundant number, since it is smaller than the sum of its proper divisors (834899706).

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

690432102 is a wasteful number, since it uses less digits than its factorization.

690432102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3165 (or 3162 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 690432102 is about 26276.0747068507. The cubic root of 690432102 is about 883.8400123715.

Adding to 690432102 its reverse (201234096), we get a palindrome (891666198).

The spelling of 690432102 in words is "six hundred ninety million, four hundred thirty-two thousand, one hundred two".