690063864408 has 160 divisors (see below), whose sum is σ = 2047035814560. Its totient is φ = 216435317760.

The previous prime is 690063864361. The next prime is 690063864409. The reversal of 690063864408 is 804468360096.

690063864408 is a `hidden beast` number, since 69 + 0 + 0 + 63 + 86 + 440 + 8 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690063864409) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 75157578 + ... + 75166758.

It is an arithmetic number, because the mean of its divisors is an integer number (12793973841).

Almost surely, 2^690063864408 is an apocalyptic number.

690063864408 is a gapful number since it is divisible by the number (68) 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 690063864408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1023517907280).

690063864408 is an abundant number, since it is smaller than the sum of its proper divisors (1356971950152).

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

690063864408 is a wasteful number, since it uses less digits than its factorization.

690063864408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16039 (or 16026 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 54.

The spelling of 690063864408 in words is "six hundred ninety billion, sixty-three million, eight hundred sixty-four thousand, four hundred eight".