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61372479 = 376474517
BaseRepresentation
bin1110101000011…
…1100000111111
311021111001012210
43222013200333
5111202404404
610031231503
71343441340
oct352074077
9137431183
1061372479
1131709063
1218678593
13c93a89c
1482180c7
1555c4689
hex3a8783f

61372479 has 16 divisors (see below), whose sum is σ = 93685248. Its totient is φ = 35008032.

The previous prime is 61372457. The next prime is 61372483. The reversal of 61372479 is 97427316.

It is not a de Polignac number, because 61372479 - 27 = 61372351 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61372079) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11329 + ... + 15845.

It is an arithmetic number, because the mean of its divisors is an integer number (5855328).

Almost surely, 261372479 is an apocalyptic number.

61372479 is a deficient number, since it is larger than the sum of its proper divisors (32312769).

61372479 is a wasteful number, since it uses less digits than its factorization.

61372479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5174.

The product of its digits is 63504, while the sum is 39.

The square root of 61372479 is about 7834.0589096585. The cubic root of 61372479 is about 394.4493293377.

It can be divided in two parts, 6137247 and 9, that added together give a triangular number (6137256 = T3503).

The spelling of 61372479 in words is "sixty-one million, three hundred seventy-two thousand, four hundred seventy-nine".

Divisors: 1 3 7 21 647 1941 4517 4529 13551 13587 31619 94857 2922499 8767497 20457493 61372479