65490373 has 10 divisors (see below), whose sum is σ = 70978654. Its totient is φ = 60426288.

The previous prime is 65490371. The next prime is 65490379. The reversal of 65490373 is 37309456.

It can be written as a sum of positive squares in 5 ways, for example, as 60186564 + 5303809 = 7758^2 + 2303^2 .

It is not a de Polignac number, because 65490373 - 2¹ = 65490371 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65490371) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 27415 + ... + 29707.

Almost surely, 2^65490373 is an apocalyptic number.

It is an amenable number.

65490373 is a deficient number, since it is larger than the sum of its proper divisors (5488281).

65490373 is an frugal number, since it uses more digits than its factorization.

65490373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2345 (or 2306 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 37.

The square root of 65490373 is about 8092.6122482175. The cubic root of 65490373 is about 403.0811491112.

The spelling of 65490373 in words is "sixty-five million, four hundred ninety thousand, three hundred seventy-three".