70016437 has 4 divisors (see below), whose sum is σ = 71002656. Its totient is φ = 69030220.

The previous prime is 70016431. The next prime is 70016449. The reversal of 70016437 is 73461007.

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: 73461007 = 4049 ⋅18143.

It is a cyclic number.

It is not a de Polignac number, because 70016437 - 2¹¹ = 70014389 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 (70016431) 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, 493003 + ... + 493144.

It is an arithmetic number, because the mean of its divisors is an integer number (17750664).

Almost surely, 2^70016437 is an apocalyptic number.

It is an amenable number.

70016437 is a deficient number, since it is larger than the sum of its proper divisors (986219).

70016437 is an equidigital number, since it uses as much as digits as its factorization.

70016437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 986218.

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 70016437 is about 8367.5825063157. The cubic root of 70016437 is about 412.1607853451.

The spelling of 70016437 in words is "seventy million, sixteen thousand, four hundred thirty-seven".