70644542 has 4 divisors (see below), whose sum is σ = 105966816. Its totient is φ = 35322270.

The previous prime is 70644533. The next prime is 70644559. The reversal of 70644542 is 24544607.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 70644499 and 70644508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17661134 + ... + 17661137.

It is an arithmetic number, because the mean of its divisors is an integer number (26491704).

Almost surely, 2^70644542 is an apocalyptic number.

70644542 is a deficient number, since it is larger than the sum of its proper divisors (35322274).

70644542 is a wasteful number, since it uses less digits than its factorization.

70644542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35322273.

The product of its (nonzero) digits is 26880, while the sum is 32.

The square root of 70644542 is about 8405.0307554464. The cubic root of 70644542 is about 413.3895918625.

The spelling of 70644542 in words is "seventy million, six hundred forty-four thousand, five hundred forty-two".