690970343550 has 192 divisors, whose sum is σ = 1849889885184. Its totient is φ = 170228044800.

The previous prime is 690970343533. The next prime is 690970343579. The reversal of 690970343550 is 55343079096.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 690970343493 and 690970343502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 17468295 + ... + 17507805.

It is an arithmetic number, because the mean of its divisors is an integer number (9634843152).

Almost surely, 2^690970343550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 690970343550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (924944942592).

690970343550 is an abundant number, since it is smaller than the sum of its proper divisors (1158919541634).

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

690970343550 is a wasteful number, since it uses less digits than its factorization.

690970343550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39723 (or 39718 counting only the distinct ones).

The product of its (nonzero) digits is 3061800, while the sum is 51.

The spelling of 690970343550 in words is "six hundred ninety billion, nine hundred seventy million, three hundred forty-three thousand, five hundred fifty".