70893649 has 4 divisors (see below), whose sum is σ = 70988800. Its totient is φ = 70798500.

The previous prime is 70893643. The next prime is 70893653. The reversal of 70893649 is 94639807.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 94639807 = 31 ⋅3052897.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70893649 is a prime.

It is a super-3 number, since 3×70893649³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 70893599 and 70893608.

It is not an unprimeable number, because it can be changed into a prime (70893643) 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, 46449 + ... + 47950.

It is an arithmetic number, because the mean of its divisors is an integer number (17747200).

Almost surely, 2^70893649 is an apocalyptic number.

It is an amenable number.

70893649 is a deficient number, since it is larger than the sum of its proper divisors (95151).

70893649 is an equidigital number, since it uses as much as digits as its factorization.

70893649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95150.

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 70893649 is about 8419.8366373701. The cubic root of 70893649 is about 413.8749204007.

The spelling of 70893649 in words is "seventy million, eight hundred ninety-three thousand, six hundred forty-nine".