70431653 has 4 divisors (see below), whose sum is σ = 70456140. Its totient is φ = 70407168.

The previous prime is 70431649. The next prime is 70431661. The reversal of 70431653 is 35613407.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35613407 = 23 ⋅1548409.

It can be written as a sum of positive squares in 2 ways, for example, as 11710084 + 58721569 = 3422^2 + 7663^2 .

It is a cyclic number.

It is not a de Polignac number, because 70431653 - 2² = 70431649 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70431553) 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, 7250 + ... + 13907.

It is an arithmetic number, because the mean of its divisors is an integer number (17614035).

Almost surely, 2^70431653 is an apocalyptic number.

It is an amenable number.

70431653 is a deficient number, since it is larger than the sum of its proper divisors (24487).

70431653 is a wasteful number, since it uses less digits than its factorization.

70431653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24486.

The product of its (nonzero) digits is 7560, while the sum is 29.

The square root of 70431653 is about 8392.3568203455. The cubic root of 70431653 is about 412.9739209300.

The spelling of 70431653 in words is "seventy million, four hundred thirty-one thousand, six hundred fifty-three".