70432749 has 6 divisors (see below), whose sum is σ = 101736206. Its totient is φ = 46955160.

The previous prime is 70432723. The next prime is 70432759. The reversal of 70432749 is 94723407.

It can be written as a sum of positive squares in only one way, i.e., 39463524 + 30969225 = 6282^2 + 5565^2 .

It is not a de Polignac number, because 70432749 - 2¹² = 70428653 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 (70432709) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3912922 + ... + 3912939.

Almost surely, 2^70432749 is an apocalyptic number.

It is an amenable number.

70432749 is a deficient number, since it is larger than the sum of its proper divisors (31303457).

70432749 is a wasteful number, since it uses less digits than its factorization.

70432749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7825867 (or 7825864 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The square root of 70432749 is about 8392.4221176011. The cubic root of 70432749 is about 412.9760630402.

The spelling of 70432749 in words is "seventy million, four hundred thirty-two thousand, seven hundred forty-nine".