65632489 has 8 divisors (see below), whose sum is σ = 71576960. Its totient is φ = 59816016.

The previous prime is 65632447. The next prime is 65632493. The reversal of 65632489 is 98423656.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 65632489 - 2¹³ = 65624297 is a prime.

It is a super-2 number, since 2×65632489² = 8615247224670242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (65632789) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30927 + ... + 32980.

It is an arithmetic number, because the mean of its divisors is an integer number (8947120).

Almost surely, 2^65632489 is an apocalyptic number.

It is an amenable number.

65632489 is a deficient number, since it is larger than the sum of its proper divisors (5944471).

65632489 is a wasteful number, since it uses less digits than its factorization.

65632489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63999.

The product of its digits is 311040, while the sum is 43.

The square root of 65632489 is about 8101.3880909385. The cubic root of 65632489 is about 403.3725043728.

The spelling of 65632489 in words is "sixty-five million, six hundred thirty-two thousand, four hundred eighty-nine".