102070605 has 128 divisors (see below), whose sum is σ = 215728128. Its totient is φ = 40061952.

The previous prime is 102070597. The next prime is 102070621. The reversal of 102070605 is 506070201.

It is not a de Polignac number, because 102070605 - 2³ = 102070597 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2171692 + ... + 2171738.

It is an arithmetic number, because the mean of its divisors is an integer number (1685376).

Almost surely, 2^102070605 is an apocalyptic number.

102070605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

102070605 is an abundant number, since it is smaller than the sum of its proper divisors (113657523).

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

102070605 is a wasteful number, since it uses less digits than its factorization.

102070605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155.

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 102070605 is about 10102.9998020390. Note that the first 3 decimals coincide. The cubic root of 102070605 is about 467.3406550845.

The spelling of 102070605 in words is "one hundred two million, seventy thousand, six hundred five".