70993405 has 48 divisors (see below), whose sum is σ = 106047360. Its totient is φ = 45360000.

The previous prime is 70993393. The next prime is 70993409. The reversal of 70993405 is 50439907.

It is not a de Polignac number, because 70993405 - 2¹⁹ = 70469117 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70993409) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 470080 + ... + 470230.

It is an arithmetic number, because the mean of its divisors is an integer number (2209320).

Almost surely, 2^70993405 is an apocalyptic number.

It is an amenable number.

70993405 is a deficient number, since it is larger than the sum of its proper divisors (35053955).

70993405 is a wasteful number, since it uses less digits than its factorization.

70993405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290 (or 283 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 37.

The square root of 70993405 is about 8425.7584228365. The cubic root of 70993405 is about 414.0689535626.

The spelling of 70993405 in words is "seventy million, nine hundred ninety-three thousand, four hundred five".