70867121 has 4 divisors (see below), whose sum is σ = 76318452. Its totient is φ = 65415792.

The previous prime is 70867109. The next prime is 70867123. The reversal of 70867121 is 12176807.

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 39942400 + 30924721 = 6320^2 + 5561^2 .

It is not a de Polignac number, because 70867121 - 2¹⁰ = 70866097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70867123) 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, 2725646 + ... + 2725671.

It is an arithmetic number, because the mean of its divisors is an integer number (19079613).

Almost surely, 2^70867121 is an apocalyptic number.

It is an amenable number.

70867121 is a deficient number, since it is larger than the sum of its proper divisors (5451331).

70867121 is a wasteful number, since it uses less digits than its factorization.

70867121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5451330.

The product of its (nonzero) digits is 4704, while the sum is 32.

The square root of 70867121 is about 8418.2611624967. The cubic root of 70867121 is about 413.8232907470.

The spelling of 70867121 in words is "seventy million, eight hundred sixty-seven thousand, one hundred twenty-one".