65478501 has 24 divisors (see below), whose sum is σ = 103480416. Its totient is φ = 39567840.

The previous prime is 65478499. The next prime is 65478521. The reversal of 65478501 is 10587456.

It is not a de Polignac number, because 65478501 - 2¹ = 65478499 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65478521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43111 + ... + 44603.

It is an arithmetic number, because the mean of its divisors is an integer number (4311684).

Almost surely, 2^65478501 is an apocalyptic number.

It is an amenable number.

65478501 is a deficient number, since it is larger than the sum of its proper divisors (38001915).

65478501 is a wasteful number, since it uses less digits than its factorization.

65478501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1953 (or 1950 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The square root of 65478501 is about 8091.8787064562. The cubic root of 65478501 is about 403.0567909835.

The spelling of 65478501 in words is "sixty-five million, four hundred seventy-eight thousand, five hundred one".