67463640 has 96 divisors (see below), whose sum is σ = 222608880. Its totient is φ = 17715456.

The previous prime is 67463611. The next prime is 67463651. The reversal of 67463640 is 4636476.

67463640 is a `hidden beast` number, since 6 + 7 + 4 + 6 + 3 + 640 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 67463595 and 67463604.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22722 + ... + 25518.

Almost surely, 2^67463640 is an apocalyptic number.

67463640 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67463640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111304440).

67463640 is an abundant number, since it is smaller than the sum of its proper divisors (155145240).

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

67463640 is a wasteful number, since it uses less digits than its factorization.

67463640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2881 (or 2874 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 36.

The square root of 67463640 is about 8213.6252653746. The cubic root of 67463640 is about 407.0895210438.

The spelling of 67463640 in words is "sixty-seven million, four hundred sixty-three thousand, six hundred forty".