71751690 has 32 divisors (see below), whose sum is σ = 191338560. Its totient is φ = 19133712.

The previous prime is 71751689. The next prime is 71751703. The reversal of 71751690 is 9615717.

It is a super-2 number, since 2×71751690² = 10296610035712200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132604 + ... + 133143.

It is an arithmetic number, because the mean of its divisors is an integer number (5979330).

Almost surely, 2^71751690 is an apocalyptic number.

71751690 is an abundant number, since it is smaller than the sum of its proper divisors (119586870).

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

71751690 is a wasteful number, since it uses less digits than its factorization.

71751690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265763 (or 265757 counting only the distinct ones).

The product of its (nonzero) digits is 13230, while the sum is 36.

The square root of 71751690 is about 8470.6369300071. The cubic root of 71751690 is about 415.5379678320.

The spelling of 71751690 in words is "seventy-one million, seven hundred fifty-one thousand, six hundred ninety".