70710149 has 4 divisors (see below), whose sum is σ = 73148460. Its totient is φ = 68271840.

The previous prime is 70710127. The next prime is 70710151. The reversal of 70710149 is 94101707.

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

It can be written as a sum of positive squares in 2 ways, for example, as 26061025 + 44649124 = 5105^2 + 6682^2 .

It is a cyclic number.

It is not a de Polignac number, because 70710149 - 2²⁴ = 53932933 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 2438281 = 70710149 / (7 + 0 + 7 + 1 + 0 + 1 + 4 + 9).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70710179) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1219112 + ... + 1219169.

It is an arithmetic number, because the mean of its divisors is an integer number (18287115).

Almost surely, 2^70710149 is an apocalyptic number.

It is an amenable number.

70710149 is a deficient number, since it is larger than the sum of its proper divisors (2438311).

70710149 is a wasteful number, since it uses less digits than its factorization.

70710149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2438310.

The product of its (nonzero) digits is 1764, while the sum is 29.

The square root of 70710149 is about 8408.9326908948. The cubic root of 70710149 is about 413.5175227626.

The spelling of 70710149 in words is "seventy million, seven hundred ten thousand, one hundred forty-nine".