70697940 has 96 divisors (see below), whose sum is σ = 209986560. Its totient is φ = 17740800.

The previous prime is 70697923. The next prime is 70697971. The reversal of 70697940 is 4979607.

It is a junction number, because it is equal to n+sod(n) for n = 70697892 and 70697901.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 70845 + ... + 71835.

It is an arithmetic number, because the mean of its divisors is an integer number (2187360).

Almost surely, 2^70697940 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 70697940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104993280).

70697940 is an abundant number, since it is smaller than the sum of its proper divisors (139288620).

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

70697940 is a wasteful number, since it uses less digits than its factorization.

70697940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1073 (or 1071 counting only the distinct ones).

The product of its (nonzero) digits is 95256, while the sum is 42.

The square root of 70697940 is about 8408.2067053564. The cubic root of 70697940 is about 413.4937217189.

The spelling of 70697940 in words is "seventy million, six hundred ninety-seven thousand, nine hundred forty".