1552406660 has 24 divisors (see below), whose sum is σ = 3725776320. Its totient is φ = 532253664.

The previous prime is 1552406591. The next prime is 1552406671. The reversal of 1552406660 is 666042551.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 1552406660.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5544170 + ... + 5544449.

It is an arithmetic number, because the mean of its divisors is an integer number (155240680).

Almost surely, 2^1552406660 is an apocalyptic number.

1552406660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1552406660 is an abundant number, since it is smaller than the sum of its proper divisors (2173369660).

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

1552406660 is a wasteful number, since it uses less digits than its factorization.

1552406660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11088635 (or 11088633 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 1552406660 is about 39400.5921275303. The cubic root of 1552406660 is about 1157.8931883748.

The spelling of 1552406660 in words is "one billion, five hundred fifty-two million, four hundred six thousand, six hundred sixty".