97087870 has 16 divisors (see below), whose sum is σ = 190645488. Its totient is φ = 35304640.

The previous prime is 97087847. The next prime is 97087871. The reversal of 97087870 is 7878079.

It is a happy number.

It is a super-2 number, since 2×97087870² = 18852109002273800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 97087870.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97087871) 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, 441199 + ... + 441418.

It is an arithmetic number, because the mean of its divisors is an integer number (11915343).

Almost surely, 2^97087870 is an apocalyptic number.

97087870 is a deficient number, since it is larger than the sum of its proper divisors (93557618).

97087870 is a wasteful number, since it uses less digits than its factorization.

97087870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 882635.

The product of its (nonzero) digits is 197568, while the sum is 46.

The square root of 97087870 is about 9853.3177153688. The cubic root of 97087870 is about 459.6087883674.

It can be divided in two parts, 9708 and 7870, that added together give a triangular number (17578 = T₁₈₇).

The spelling of 97087870 in words is "ninety-seven million, eighty-seven thousand, eight hundred seventy".