85490737 has 4 divisors (see below), whose sum is σ = 85737456. Its totient is φ = 85244020.

The previous prime is 85490723. The next prime is 85490759. The reversal of 85490737 is 73709458.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-85490737 is a prime.

It is a super-2 number, since 2×85490737² = 14617332225606338, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85490693 and 85490702.

It is not an unprimeable number, because it can be changed into a prime (85490767) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122839 + ... + 123532.

It is an arithmetic number, because the mean of its divisors is an integer number (21434364).

Almost surely, 2^85490737 is an apocalyptic number.

It is an amenable number.

85490737 is a deficient number, since it is larger than the sum of its proper divisors (246719).

85490737 is a wasteful number, since it uses less digits than its factorization.

85490737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246718.

The product of its (nonzero) digits is 211680, while the sum is 43.

The square root of 85490737 is about 9246.1201052117. The cubic root of 85490737 is about 440.5274958003.

The spelling of 85490737 in words is "eighty-five million, four hundred ninety thousand, seven hundred thirty-seven".