70397737 has 4 divisors (see below), whose sum is σ = 70457940. Its totient is φ = 70337536.

The previous prime is 70397699. The next prime is 70397741. The reversal of 70397737 is 73779307.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 32501401 + 37896336 = 5701^2 + 6156^2 .

It is a cyclic number.

It is not a de Polignac number, because 70397737 - 2⁷ = 70397609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 70397693 and 70397702.

It is not an unprimeable number, because it can be changed into a prime (70397777) 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, 28312 + ... + 30697.

It is an arithmetic number, because the mean of its divisors is an integer number (17614485).

Almost surely, 2^70397737 is an apocalyptic number.

It is an amenable number.

70397737 is a deficient number, since it is larger than the sum of its proper divisors (60203).

70397737 is a wasteful number, since it uses less digits than its factorization.

70397737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60202.

The product of its (nonzero) digits is 194481, while the sum is 43.

The square root of 70397737 is about 8390.3359289125. The cubic root of 70397737 is about 412.9076217982.

The spelling of 70397737 in words is "seventy million, three hundred ninety-seven thousand, seven hundred thirty-seven".