155366406 has 24 divisors (see below), whose sum is σ = 362522160. Its totient is φ = 47804976.

The previous prime is 155366371. The next prime is 155366423. The reversal of 155366406 is 604663551.

155366406 is a `hidden beast` number, since 1 + 5 + 5 + 3 + 6 + 640 + 6 = 666.

It is a super-2 number, since 2×155366406² = 48277440226713672, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 331746 + ... + 332213.

It is an arithmetic number, because the mean of its divisors is an integer number (15105090).

Almost surely, 2^155366406 is an apocalyptic number.

155366406 is an abundant number, since it is smaller than the sum of its proper divisors (207155754).

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

155366406 is a wasteful number, since it uses less digits than its factorization.

155366406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663980 (or 663977 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 155366406 is about 12464.6061309614. The cubic root of 155366406 is about 537.5914750389.

The spelling of 155366406 in words is "one hundred fifty-five million, three hundred sixty-six thousand, four hundred six".