70869451 has 4 divisors (see below), whose sum is σ = 71927272. Its totient is φ = 69811632.

The previous prime is 70869439. The next prime is 70869497. The reversal of 70869451 is 15496807.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15496807 = 31 ⋅499897.

It is a cyclic number.

It is not a de Polignac number, because 70869451 - 2²¹ = 68772299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70869551) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 528810 + ... + 528943.

It is an arithmetic number, because the mean of its divisors is an integer number (17981818).

Almost surely, 2^70869451 is an apocalyptic number.

70869451 is a deficient number, since it is larger than the sum of its proper divisors (1057821).

70869451 is a wasteful number, since it uses less digits than its factorization.

70869451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1057820.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 70869451 is about 8418.3995509835. The cubic root of 70869451 is about 413.8278259846.

The spelling of 70869451 in words is "seventy million, eight hundred sixty-nine thousand, four hundred fifty-one".