61227904 has 16 divisors (see below), whose sum is σ = 121977720. Its totient is φ = 30613888.

The previous prime is 61227893. The next prime is 61227913. The reversal of 61227904 is 40972216.

It is a tau number, because it is divible by the number of its divisors (16).

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239044 + ... + 239299.

Almost surely, 2^61227904 is an apocalyptic number.

61227904 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

61227904 is a deficient number, since it is larger than the sum of its proper divisors (60749816).

61227904 is an equidigital number, since it uses as much as digits as its factorization.

61227904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478357 (or 478345 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 61227904 is about 7824.8261322537. The cubic root of 61227904 is about 394.1393513624.

The spelling of 61227904 in words is "sixty-one million, two hundred twenty-seven thousand, nine hundred four".