70923019 has 4 divisors (see below), whose sum is σ = 71611696. Its totient is φ = 70234344.

The previous prime is 70922987. The next prime is 70923037. The reversal of 70923019 is 91032907.

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

It is a cyclic number.

It is not a de Polignac number, because 70923019 - 2⁵ = 70922987 is a prime.

It is a super-2 number, since 2×70923019² = 10060149248148722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70923049) 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, 344184 + ... + 344389.

It is an arithmetic number, because the mean of its divisors is an integer number (17902924).

Almost surely, 2^70923019 is an apocalyptic number.

70923019 is a deficient number, since it is larger than the sum of its proper divisors (688677).

70923019 is a wasteful number, since it uses less digits than its factorization.

70923019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 688676.

The product of its (nonzero) digits is 3402, while the sum is 31.

The square root of 70923019 is about 8421.5805523666. The cubic root of 70923019 is about 413.9320662258.

The spelling of 70923019 in words is "seventy million, nine hundred twenty-three thousand, nineteen".