687090070 has 16 divisors (see below), whose sum is σ = 1237232880. Its totient is φ = 274731424.

The previous prime is 687090067. The next prime is 687090073. The reversal of 687090070 is 70090786.

It is an interprime number because it is at equal distance from previous prime (687090067) and next prime (687090073).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (687090073) 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, 18036 + ... + 41224.

It is an arithmetic number, because the mean of its divisors is an integer number (77327055).

Almost surely, 2^687090070 is an apocalyptic number.

687090070 is a deficient number, since it is larger than the sum of its proper divisors (550142810).

687090070 is a wasteful number, since it uses less digits than its factorization.

687090070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26159.

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 687090070 is about 26212.4029802687. The cubic root of 687090070 is about 882.4116312952.

The spelling of 687090070 in words is "six hundred eighty-seven million, ninety thousand, seventy".