70923505 has 8 divisors (see below), whose sum is σ = 87853824. Its totient is φ = 54908400.

The previous prime is 70923497. The next prime is 70923547. The reversal of 70923505 is 50532907.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 70923505 - 2³ = 70923497 is a prime.

It is a super-2 number, since 2×70923505² = 10060287122970050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 228631 + ... + 228940.

It is an arithmetic number, because the mean of its divisors is an integer number (10981728).

Almost surely, 2^70923505 is an apocalyptic number.

It is an amenable number.

70923505 is a deficient number, since it is larger than the sum of its proper divisors (16930319).

70923505 is a wasteful number, since it uses less digits than its factorization.

70923505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457607.

The product of its (nonzero) digits is 9450, while the sum is 31.

The square root of 70923505 is about 8421.6094067583. The cubic root of 70923505 is about 413.9330117134.

The spelling of 70923505 in words is "seventy million, nine hundred twenty-three thousand, five hundred five".