70751749 has 4 divisors (see below), whose sum is σ = 73827936. Its totient is φ = 67675564.

The previous prime is 70751741. The next prime is 70751761. The reversal of 70751749 is 94715707.

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 70751749 - 2³ = 70751741 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 (70751741) 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, 1538059 + ... + 1538104.

It is an arithmetic number, because the mean of its divisors is an integer number (18456984).

Almost surely, 2^70751749 is an apocalyptic number.

It is an amenable number.

70751749 is a deficient number, since it is larger than the sum of its proper divisors (3076187).

70751749 is a wasteful number, since it uses less digits than its factorization.

70751749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3076186.

The product of its (nonzero) digits is 61740, while the sum is 40.

The square root of 70751749 is about 8411.4058872462. The cubic root of 70751749 is about 413.5986000281.

The spelling of 70751749 in words is "seventy million, seven hundred fifty-one thousand, seven hundred forty-nine".