70387743 has 4 divisors (see below), whose sum is σ = 93850328. Its totient is φ = 46925160.

The previous prime is 70387739. The next prime is 70387747. The reversal of 70387743 is 34778307.

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

It is an interprime number because it is at equal distance from previous prime (70387739) and next prime (70387747).

It is not a de Polignac number, because 70387743 - 2² = 70387739 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 (70387747) 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, 11731288 + ... + 11731293.

It is an arithmetic number, because the mean of its divisors is an integer number (23462582).

Almost surely, 2^70387743 is an apocalyptic number.

70387743 is a deficient number, since it is larger than the sum of its proper divisors (23462585).

70387743 is a wasteful number, since it uses less digits than its factorization.

70387743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23462584.

The product of its (nonzero) digits is 98784, while the sum is 39.

The square root of 70387743 is about 8389.7403416316. The cubic root of 70387743 is about 412.8880814255. Note that the first 3 decimals are identical.

The spelling of 70387743 in words is "seventy million, three hundred eighty-seven thousand, seven hundred forty-three".