70263149 has 4 divisors (see below), whose sum is σ = 76650720. Its totient is φ = 63875580.

The previous prime is 70263139. The next prime is 70263163. The reversal of 70263149 is 94136207.

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.

It is a cyclic number.

It is not a de Polignac number, because 70263149 - 2⁴ = 70263133 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 (70263139) 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, 3193769 + ... + 3193790.

It is an arithmetic number, because the mean of its divisors is an integer number (19162680).

Almost surely, 2^70263149 is an apocalyptic number.

It is an amenable number.

70263149 is a deficient number, since it is larger than the sum of its proper divisors (6387571).

70263149 is a wasteful number, since it uses less digits than its factorization.

70263149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6387570.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 70263149 is about 8382.3116739954. The cubic root of 70263149 is about 412.6443185260.

The spelling of 70263149 in words is "seventy million, two hundred sixty-three thousand, one hundred forty-nine".