70696638 has 20 divisors (see below), whose sum is σ = 158413200. Its totient is φ = 23565492.

The previous prime is 70696597. The next prime is 70696643. The reversal of 70696638 is 83669607.

70696638 is a `hidden beast` number, since 7 + 0 + 6 + 9 + 6 + 638 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 70696593 and 70696602.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 218038 + ... + 218361.

It is an arithmetic number, because the mean of its divisors is an integer number (7920660).

Almost surely, 2^70696638 is an apocalyptic number.

70696638 is an abundant number, since it is smaller than the sum of its proper divisors (87716562).

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

70696638 is a wasteful number, since it uses less digits than its factorization.

70696638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436413 (or 436404 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The square root of 70696638 is about 8408.1292806426. The cubic root of 70696638 is about 413.4911833510.

It can be divided in two parts, 706 and 96638, that added together give a square (97344 = 312²).

The spelling of 70696638 in words is "seventy million, six hundred ninety-six thousand, six hundred thirty-eight".