497648445690 has 32 divisors (see below), whose sum is σ = 1302934113216. Its totient is φ = 120642047360.

The previous prime is 497648445661. The next prime is 497648445719. The reversal of 497648445690 is 96544846794.

It is an interprime number because it is at equal distance from previous prime (497648445661) and next prime (497648445719).

It is a super-2 number, since 2×497648445690² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 754012467 + ... + 754013126.

It is an arithmetic number, because the mean of its divisors is an integer number (40716691038).

Almost surely, 2^497648445690 is an apocalyptic number.

497648445690 is an abundant number, since it is smaller than the sum of its proper divisors (805285667526).

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

497648445690 is a wasteful number, since it uses less digits than its factorization.

497648445690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1508025614.

The product of its (nonzero) digits is 209018880, while the sum is 66.

The spelling of 497648445690 in words is "four hundred ninety-seven billion, six hundred forty-eight million, four hundred forty-five thousand, six hundred ninety".