697497440640 has 2048 divisors, whose sum is σ = 3221677670400. Its totient is φ = 123597619200.

The previous prime is 697497440611. The next prime is 697497440669. The reversal of 697497440640 is 46044794796.

It is an interprime number because it is at equal distance from previous prime (697497440611) and next prime (697497440669).

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 1370328706 + ... + 1370329214.

It is an arithmetic number, because the mean of its divisors is an integer number (1573084800).

Almost surely, 2^697497440640 is an apocalyptic number.

697497440640 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 697497440640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1610838835200).

697497440640 is an abundant number, since it is smaller than the sum of its proper divisors (2524180229760).

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

697497440640 is a wasteful number, since it uses less digits than its factorization.

697497440640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616 (or 604 counting only the distinct ones).

The product of its (nonzero) digits is 36578304, while the sum is 60.

The spelling of 697497440640 in words is "six hundred ninety-seven billion, four hundred ninety-seven million, four hundred forty thousand, six hundred forty".