208307475087 has 8 divisors (see below), whose sum is σ = 277753106736. Its totient is φ = 138866746752.

The previous prime is 208307475067. The next prime is 208307475097. The reversal of 208307475087 is 780574703802.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 208307475087 - 2¹² = 208307470991 is a prime.

It is a super-2 number, since 2×208307475087² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208307475037) 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, 1125528 + ... + 1297469.

It is an arithmetic number, because the mean of its divisors is an integer number (34719138342).

Almost surely, 2^208307475087 is an apocalyptic number.

208307475087 is a deficient number, since it is larger than the sum of its proper divisors (69445631649).

208307475087 is a wasteful number, since it uses less digits than its factorization.

208307475087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2451657.

The product of its (nonzero) digits is 2634240, while the sum is 51.

The spelling of 208307475087 in words is "two hundred eight billion, three hundred seven million, four hundred seventy-five thousand, eighty-seven".