70650691 has 4 divisors (see below), whose sum is σ = 74806632. Its totient is φ = 66494752.

The previous prime is 70650689. The next prime is 70650703. The reversal of 70650691 is 19605607.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 70650691 - 2¹ = 70650689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70650791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2077945 + ... + 2077978.

It is an arithmetic number, because the mean of its divisors is an integer number (18701658).

Almost surely, 2^70650691 is an apocalyptic number.

70650691 is a deficient number, since it is larger than the sum of its proper divisors (4155941).

70650691 is a wasteful number, since it uses less digits than its factorization.

70650691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4155940.

The product of its (nonzero) digits is 11340, while the sum is 34.

The square root of 70650691 is about 8405.3965403186. The cubic root of 70650691 is about 413.4015855178.

The spelling of 70650691 in words is "seventy million, six hundred fifty thousand, six hundred ninety-one".