70973615 has 4 divisors (see below), whose sum is σ = 85168344. Its totient is φ = 56778888.

The previous prime is 70973611. The next prime is 70973633. The reversal of 70973615 is 51637907.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51637907 = 3359 ⋅15373.

It is a cyclic number.

It is not a de Polignac number, because 70973615 - 2² = 70973611 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 (70973611) 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, 7097357 + ... + 7097366.

It is an arithmetic number, because the mean of its divisors is an integer number (21292086).

Almost surely, 2^70973615 is an apocalyptic number.

70973615 is a deficient number, since it is larger than the sum of its proper divisors (14194729).

70973615 is a wasteful number, since it uses less digits than its factorization.

70973615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14194728.

The product of its (nonzero) digits is 39690, while the sum is 38.

The square root of 70973615 is about 8424.5839659891. The cubic root of 70973615 is about 414.0304749362.

The spelling of 70973615 in words is "seventy million, nine hundred seventy-three thousand, six hundred fifteen".