70986157 has 8 divisors (see below), whose sum is σ = 77954112. Its totient is φ = 64104000.

The previous prime is 70986079. The next prime is 70986199. The reversal of 70986157 is 75168907.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70986157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70989157) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19708 + ... + 23029.

It is an arithmetic number, because the mean of its divisors is an integer number (9744264).

Almost surely, 2^70986157 is an apocalyptic number.

It is an amenable number.

70986157 is a deficient number, since it is larger than the sum of its proper divisors (6967955).

70986157 is a wasteful number, since it uses less digits than its factorization.

70986157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42899.

The product of its (nonzero) digits is 105840, while the sum is 43.

The square root of 70986157 is about 8425.3283022088. The cubic root of 70986157 is about 414.0548617658.

The spelling of 70986157 in words is "seventy million, nine hundred eighty-six thousand, one hundred fifty-seven".