67706064 has 40 divisors (see below), whose sum is σ = 194342720. Its totient is φ = 22568544.

The previous prime is 67706059. The next prime is 67706083. The reversal of 67706064 is 46060776.

It is a super-2 number, since 2×67706064² = 9168222204744192, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77932 + ... + 78795.

It is an arithmetic number, because the mean of its divisors is an integer number (4858568).

Almost surely, 2^67706064 is an apocalyptic number.

It is an amenable number.

67706064 is an abundant number, since it is smaller than the sum of its proper divisors (126636656).

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

67706064 is a wasteful number, since it uses less digits than its factorization.

67706064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156744 (or 156732 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The square root of 67706064 is about 8228.3694618071. The cubic root of 67706064 is about 407.5765502870.

The spelling of 67706064 in words is "sixty-seven million, seven hundred six thousand, sixty-four".