70406623 has 4 divisors (see below), whose sum is σ = 80464720. Its totient is φ = 60348528.

The previous prime is 70406621. The next prime is 70406663. The reversal of 70406623 is 32660407.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32660407 = 13 ⋅2512339.

It is a cyclic number.

It is not a de Polignac number, because 70406623 - 2¹ = 70406621 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 70406591 and 70406600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70406621) 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, 5029038 + ... + 5029051.

It is an arithmetic number, because the mean of its divisors is an integer number (20116180).

Almost surely, 2^70406623 is an apocalyptic number.

70406623 is a deficient number, since it is larger than the sum of its proper divisors (10058097).

70406623 is a wasteful number, since it uses less digits than its factorization.

70406623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10058096.

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 70406623 is about 8390.8654499998. The cubic root of 70406623 is about 412.9249942447.

The spelling of 70406623 in words is "seventy million, four hundred six thousand, six hundred twenty-three".