65474040 has 32 divisors (see below), whose sum is σ = 196422480. Its totient is φ = 17459712.

The previous prime is 65474039. The next prime is 65474041. The reversal of 65474040 is 4047456.

It is an interprime number because it is at equal distance from previous prime (65474039) and next prime (65474041).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 65473989 and 65474007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65474041) 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, 272689 + ... + 272928.

Almost surely, 2^65474040 is an apocalyptic number.

65474040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

65474040 is an abundant number, since it is smaller than the sum of its proper divisors (130948440).

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

65474040 is a wasteful number, since it uses less digits than its factorization.

65474040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545631 (or 545627 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 30.

The square root of 65474040 is about 8091.6030550194. The cubic root of 65474040 is about 403.0476374591.

The spelling of 65474040 in words is "sixty-five million, four hundred seventy-four thousand, forty".