71663074 has 16 divisors (see below), whose sum is σ = 124046208. Its totient is φ = 30413952.

The previous prime is 71663071. The next prime is 71663077. The reversal of 71663074 is 47036617.

It is an interprime number because it is at equal distance from previous prime (71663071) and next prime (71663077).

It is not an unprimeable number, because it can be changed into a prime (71663071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23407 + ... + 26290.

It is an arithmetic number, because the mean of its divisors is an integer number (7752888).

Almost surely, 2^71663074 is an apocalyptic number.

71663074 is a deficient number, since it is larger than the sum of its proper divisors (52383134).

71663074 is a wasteful number, since it uses less digits than its factorization.

71663074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49809.

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 71663074 is about 8465.4045384730. The cubic root of 71663074 is about 415.3668290879.

The spelling of 71663074 in words is "seventy-one million, six hundred sixty-three thousand, seventy-four".