611401984 has 36 divisors (see below), whose sum is σ = 1222322220. Its totient is φ = 305223680.

The previous prime is 611401979. The next prime is 611402009. The reversal of 611401984 is 489104116.

It can be written as a sum of positive squares in 2 ways, for example, as 359481600 + 251920384 = 18960^2 + 15872^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 208722 + ... + 211630.

It is an arithmetic number, because the mean of its divisors is an integer number (33953395).

Almost surely, 2^611401984 is an apocalyptic number.

611401984 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

611401984 is a deficient number, since it is larger than the sum of its proper divisors (610920236).

611401984 is an equidigital number, since it uses as much as digits as its factorization.

611401984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3746 (or 3732 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 611401984 is about 24726.5441176077. The cubic root of 611401984 is about 848.7418451950.

The spelling of 611401984 in words is "six hundred eleven million, four hundred one thousand, nine hundred eighty-four".