67479664 has 120 divisors (see below), whose sum is σ = 165645648. Its totient is φ = 26449920.

The previous prime is 67479661. The next prime is 67479673. The reversal of 67479664 is 46697476.

It is a happy number.

67479664 is nontrivially palindromic in base 3.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67479661) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 812967 + ... + 813049.

Almost surely, 2^67479664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67479664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82822824).

67479664 is an abundant number, since it is smaller than the sum of its proper divisors (98165984).

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

67479664 is a wasteful number, since it uses less digits than its factorization.

67479664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183 (or 170 counting only the distinct ones).

The product of its digits is 1524096, while the sum is 49.

The square root of 67479664 is about 8214.6006598008. The cubic root of 67479664 is about 407.1217491996.

The spelling of 67479664 in words is "sixty-seven million, four hundred seventy-nine thousand, six hundred sixty-four".