70401515 has 4 divisors (see below), whose sum is σ = 84481824. Its totient is φ = 56321208.

The previous prime is 70401511. The next prime is 70401521. The reversal of 70401515 is 51510407.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51510407 = 13 ⋅3962339.

It is a cyclic number.

It is not a de Polignac number, because 70401515 - 2² = 70401511 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70401511) 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, 7040147 + ... + 7040156.

It is an arithmetic number, because the mean of its divisors is an integer number (21120456).

Almost surely, 2^70401515 is an apocalyptic number.

70401515 is a deficient number, since it is larger than the sum of its proper divisors (14080309).

70401515 is a wasteful number, since it uses less digits than its factorization.

70401515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14080308.

The product of its (nonzero) digits is 700, while the sum is 23.

The square root of 70401515 is about 8390.5610658644. The cubic root of 70401515 is about 412.9150081014.

The spelling of 70401515 in words is "seventy million, four hundred one thousand, five hundred fifteen".