70361649 has 8 divisors (see below), whose sum is σ = 104239520. Its totient is φ = 46907748.

The previous prime is 70361633. The next prime is 70361651. The reversal of 70361649 is 94616307.

70361649 is a `hidden beast` number, since 7 + 0 + 3 + 6 + 1 + 649 = 666.

It is not a de Polignac number, because 70361649 - 2⁴ = 70361633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70361449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1302967 + ... + 1303020.

It is an arithmetic number, because the mean of its divisors is an integer number (13029940).

Almost surely, 2^70361649 is an apocalyptic number.

It is an amenable number.

70361649 is a deficient number, since it is larger than the sum of its proper divisors (33877871).

70361649 is a wasteful number, since it uses less digits than its factorization.

70361649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2605996 (or 2605990 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 70361649 is about 8388.1850837949. The cubic root of 70361649 is about 412.8370534445.

The spelling of 70361649 in words is "seventy million, three hundred sixty-one thousand, six hundred forty-nine".