71490606 has 16 divisors (see below), whose sum is σ = 155979648. Its totient is φ = 21663800.

The previous prime is 71490589. The next prime is 71490607. The reversal of 71490606 is 60609417.

It is a happy number.

It is a super-2 number, since 2×71490606² = 10221813492494472, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71490607) 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, 541530 + ... + 541661.

It is an arithmetic number, because the mean of its divisors is an integer number (9748728).

Almost surely, 2^71490606 is an apocalyptic number.

71490606 is an abundant number, since it is smaller than the sum of its proper divisors (84489042).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71490606 is a wasteful number, since it uses less digits than its factorization.

71490606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1083207.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 71490606 is about 8455.2117655325. The cubic root of 71490606 is about 415.0333471050.

The spelling of 71490606 in words is "seventy-one million, four hundred ninety thousand, six hundred six".