690548040 has 384 divisors, whose sum is σ = 2802159360. Its totient is φ = 143603712.

The previous prime is 690548039. The next prime is 690548083. The reversal of 690548040 is 40845096.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 690547986 and 690548004.

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 95 ways as a sum of consecutive naturals, for example, 3505222 + ... + 3505418.

It is an arithmetic number, because the mean of its divisors is an integer number (7297290).

Almost surely, 2^690548040 is an apocalyptic number.

690548040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 690548040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1401079680).

690548040 is an abundant number, since it is smaller than the sum of its proper divisors (2111611320).

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

690548040 is a wasteful number, since it uses less digits than its factorization.

690548040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341 (or 334 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 690548040 is about 26278.2807656818. The cubic root of 690548040 is about 883.8894813480.

It can be divided in two parts, 6905 and 48040, that added together give a palindrome (54945).

The spelling of 690548040 in words is "six hundred ninety million, five hundred forty-eight thousand, forty".