298992662640 has 240 divisors, whose sum is σ = 1190065164288. Its totient is φ = 68341148928.

The previous prime is 298992662597. The next prime is 298992662641. The reversal of 298992662640 is 46266299892.

298992662640 is a `hidden beast` number, since 29 + 8 + 99 + 266 + 264 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

It is a super-2 number, since 2×298992662640² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (298992662641) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 962512 + ... + 1234671.

Almost surely, 2^298992662640 is an apocalyptic number.

298992662640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

298992662640 is an abundant number, since it is smaller than the sum of its proper divisors (891072501648).

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

298992662640 is a wasteful number, since it uses less digits than its factorization.

298992662640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2197218 (or 2197200 counting only the distinct ones).

The product of its (nonzero) digits is 40310784, while the sum is 63.

The spelling of 298992662640 in words is "two hundred ninety-eight billion, nine hundred ninety-two million, six hundred sixty-two thousand, six hundred forty".