70667688 has 192 divisors, whose sum is σ = 231897600. Its totient is φ = 17521920.

The previous prime is 70667671. The next prime is 70667689. The reversal of 70667688 is 88676607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70667689) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 539383 + ... + 539513.

It is an arithmetic number, because the mean of its divisors is an integer number (1207800).

Almost surely, 2^70667688 is an apocalyptic number.

70667688 is a gapful number since it is divisible by the number (78) 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 70667688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115948800).

70667688 is an abundant number, since it is smaller than the sum of its proper divisors (161229912).

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

70667688 is a wasteful number, since it uses less digits than its factorization.

70667688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192 (or 175 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 48.

The square root of 70667688 is about 8406.4075561443. The cubic root of 70667688 is about 413.4347346314.

The spelling of 70667688 in words is "seventy million, six hundred sixty-seven thousand, six hundred eighty-eight".