70406749 has 32 divisors (see below), whose sum is σ = 87422976. Its totient is φ = 55408320.

The previous prime is 70406731. The next prime is 70406789. The reversal of 70406749 is 94760407.

It is a cyclic number.

It is not a de Polignac number, because 70406749 - 2⁷ = 70406621 is a prime.

It is a super-2 number, since 2×70406749² = 9914220609498002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70406719) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 657954 + ... + 658060.

It is an arithmetic number, because the mean of its divisors is an integer number (2731968).

Almost surely, 2^70406749 is an apocalyptic number.

It is an amenable number.

70406749 is a deficient number, since it is larger than the sum of its proper divisors (17016227).

70406749 is a wasteful number, since it uses less digits than its factorization.

70406749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265.

The product of its (nonzero) digits is 42336, while the sum is 37.

The square root of 70406749 is about 8390.8729581611. The cubic root of 70406749 is about 412.9252405687.

The spelling of 70406749 in words is "seventy million, four hundred six thousand, seven hundred forty-nine".