690343347456 has 540 divisors, whose sum is σ = 2400516851040. Its totient is φ = 196750632960.

The previous prime is 690343347439. The next prime is 690343347497. The reversal of 690343347456 is 654743343096.

It is a happy number.

690343347456 is a `hidden beast` number, since 6 + 90 + 3 + 4 + 33 + 474 + 56 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 669585661 + ... + 669586691.

It is an arithmetic number, because the mean of its divisors is an integer number (4445401576).

Almost surely, 2^690343347456 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 690343347456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1200258425520).

690343347456 is an abundant number, since it is smaller than the sum of its proper divisors (1710173503584).

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

690343347456 is a wasteful number, since it uses less digits than its factorization.

690343347456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1732 (or 1702 counting only the distinct ones).

The product of its (nonzero) digits is 19595520, while the sum is 54.

The spelling of 690343347456 in words is "six hundred ninety billion, three hundred forty-three million, three hundred forty-seven thousand, four hundred fifty-six".